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Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 3. The students in Mr. Jones’ class figure out the value of the coins in their pockets. The total value of each student’s coins is shown in the stem-and-leaf plot below. 1. In a bag of M&Ms, 3 are red, 4 are green, and 6 are brown. If a student picks a piece of candy out of the bag, what are the odds in favor of picking a red candy? (A) 3 13 (B) 3 10 (C) 10 3 Value of Coins 0 25 1 467 2 1222 3 0049 4 89 5 0118 Key 3|4 = $0.34 13 (D) 3 What is the range of the values of the students’ coins? 2. This question obsolete as of 2011–2012. See new test specifications and practice questions. (A) $0.06 (B) $0.22 (C) $0.30 (D) $0.56 4. Which box-and-whisker plot has an interquartile range of 35? Collection 1 Box Plot (A) 0 10 20 30 40 50 Collection 1 60 70 Box Plot (B) 0 10 20 30 40 50 Collection 1 60 70 Box Plot (C) 0 10 20 30 40 50 Collection 1 60 70 Box Plot (D) 0 2010–2011 Clark County School District 1 Revised 08/02/2011 10 20 30 40 50 60 70 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 5. The box-and-whisker plot represents the test scores in an English class. 7. The stem-and-leaf plot shows the price of ten different pairs of shoes. What percent of the students scored at least 70%? Shoe Prices 1 9 2 779 3 17 4 67 5 18 (A) 20% Key: 2|7 = $27 60 70 80 90 100 English Test Scores (B) 25% What is the median price of the shoes? (C) 50% (A) $27 (D) 75% (B) $31 (C) $34 6. The chart shows prices for two different fruits. The pattern of prices continues for heavier bags of each fruit. Bag Weight 1 lb 2 lb 3 lb 4 lb (D) $39 8. This question obsolete as of 2011–2012. See new test specifications and practice questions. Fruit Prices Apples Oranges $1.50 $2.00 $2.75 $3.50 $4.00 $5.00 $5.25 $6.50 9. This question obsolete as of 2011–2012. See new test specifications and practice questions. What is the price of a 7-pound bag of oranges? (A) $8.50 (B) $9.25 (C) $11.00 (D) $11.50 2010–2011 Clark County School District 2 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 10. The Venn diagram represents three lunch choices. 12. What is 30% of 120? (A) 25 Pizza Salad (B) 36 (C) 40 15 35 10 (D) 3600 25 5 30 13. This question obsolete as of 2011–2012. See new test specifications and practice questions. 20 Juice 14. 75 is 60% of what number? How many students bought both pizza and a salad? (A) 15 (A) 15 (C) 80 (B) 25 (D) 125 (B) 45 (C) 40 15. This year the price of a yearbook increased from $40 to $50. What is the percent of increase in the cost of the yearbook? (D) 45 11. Joe flips a coin and then rolls a number cube. What is the probability that the outcome will be heads and a number greater than 4? (A) 1 6 (B) 1 4 (C) 3 8 (D) 5 6 2010–2011 Clark County School District (A) 10% (B) 25% (C) 80% (D) 125% 3 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 16. John bought a cell phone for 20% off the original price of $180. What is the sale price of the cell phone? 18. Which relation is a function? y (A) (A) $36 x (B) $90 (C) $144 (D) $160 (B) 17. A student deposited $1200 in a savings account that earned 7.5% simple interest. –1 0 2 1 3 2 Interest = principal × rate × time 4 What was the balance at the end of 2 years? (C) (A) $180 (D) (B) $1380 1, 2 , 2, 1 , 3, 0 , 3, 4 x y 3 3 6 4 3 5 9 6 (C) $1800 (D) $1920 19. What is the domain of the relation below? 2, 3 , 1, 0 , 0, 1 , 1, 4 (A) {–2, –1, 0, 3, 4} (B) {–2, –1, 0, 3} (C) {–1, 0, 3, 4} (D) {–2, –1, 0} 20. For which equation is the set of ordered pairs a solution? 1, 2 , 1, 6 , 0, 2 , 2, 10 (A) y 3x 4 (B) y x 2 (C) y 2 x 6 (D) y 4 x 2 2010–2011 Clark County School District 4 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 21. Identify the ordered pairs that represent the x-intercept and the y-intercept of the graph of the equation 3x 9 y 18 . (A) 2,0 (B) 2, 0 and 0, 6 (C) 6, 0 and 0, 2 (D) 6, 0 and 0, 2 23. What is the slope of the line that passes through the points 9, 7 and 12, 7 ? m and 0, 6 y2 y1 x2 x1 (A) 0 22. What is the slope of the line graphed below? (B) 2 5 (C) 5 2 (D) Undefined 24. A puppy was born weighing 4 pounds and gains 3 pounds each month. Which line best represents the growth of the puppy? (A) 3 2 (B) 2 3 Weight in pounds Puppy Growth D C 2 3 (A) line A 3 (D) 2 (C) line C (C) 2010–2011 Clark County School District B A Number of months (B) line B (D) line D 5 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 25. Which graph represents the given equation 1 y x 3? 4 26. Identify the slope and y-intercept of the line with the given equation: y 3 x 3 5 (A) (A) m 3 , b 3 5 (B) m 3 , b3 5 (C) m 3 , b 3 5 (D) m 3 , b (B) 27. 3 5 233 is between what two whole numbers? (A) 232 and 234 (B) 116 and 117 (C) 15 and 16 (D) 14 and 15 (C) 28. A right triangle is shown below. Find the value of x. 15 (D) 17 x (A) 8 (B) 16 (C) 32 (D) 64 2010–2011 Clark County School District 6 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 32. What is the distance between 5, 2 and 29. From her campsite, Jane bikes 5 miles directly south, then 11 miles directly west. She takes a diagonal path back to her campsite. Approximately how many miles does she travel on the diagonal path? 2, 1 ? d x2 x1 y2 y1 2 2 (A) 146 miles (A) 2 (C) 16 miles (B) 10 (D) 12 miles (C) 2 (B) 55 miles (D) 8 30. Which correctly orders the numbers from least to greatest? (A) 1 2 9 3.5 (B) 1 2 16 2 9 1 2 3.5 1 2 16 2 (C) (D) 9 9 33. An isosceles triangle has a perimeter of 26 inches. The length of the base is 6 inches. What are the lengths of the other two sides? 16 2 (A) 6 inches, 6 inches 3.5 (B) 6 inches, 14 inches (C) 8 inches, 12 inches 16 2 (D) 10 inches, 10 inches 3.5 34. The ratio of the angle measures in a triangle is 7:3:2. Classify the triangle by its angle measures. 31. The endpoints of a line segment are 5, 12 and 15, 4 . What are the coordinates of the midpoint? (A) acute (B) equiangular (C) obtuse x x y y2 M 1 2, 1 2 2 (D) right (A) 5, 4 (B) 7, 11 (C) 10, 8 (A) hexagon (D) 20, 16 (B) parallelogram 35. A quadrilateral has two pairs of parallel sides. Which name best classifies this figure? (C) pentagon (D) trapezoid 2010–2011 Clark County School District 7 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 36. What is the value of x in the figure below? 39. What is the surface area of the cylinder below? (3x)º SA 2 rh 2 r 2 110º 12cm xº 5cm (A) 40 (B) 50 (C) 120 (A) 60π cm2 (D) 150 (B) 84π cm2 (C) 132π cm2 37. What is the area of the parallelogram below? (D) 168π cm2 16 m 10 m 40. What is the volume of the rectangular prism shown below? 8m (A) 160 m2 4 cm (B) 128 m2 5 cm (C) 64 m2 7 cm (D) 52 m2 (A) 83 cm3 38. What is the area of the circle shown below? (B) 140 cm3 (C) 166 cm3 (D) 280 cm3 8 ft 41. A rectangular-shaped room has a length of 15 ft and a width of 12 ft. If the length is increased 3 ft, how much does the perimeter of the room increase? (A) 8π ft2 (B) 16π ft2 (A) 3 ft (C) 32π ft2 (B) 6 ft (D) 64π ft2 (C) 12 ft (D) 36 ft 2010–2011 Clark County School District 8 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 42. Which expression is a binomial? 46. What are the next three terms in the sequence? (A) x 2 1 1 , , 1, 2, ... 4 2 (B) 2x (C) x 2 (A) 4, 6, 8 (B) 4, –6, 8 (D) x 2 (C) 4, –8, 16 43. Find the sum. (D) –4, –8, –16 5x 9 2x 3 47. Two angles are supplementary. The measure of the first angle is four times greater than the measure of the second angle. What is the measure of the larger angle? (A) 7 x 12 (B) 7 x 6 (C) 3x 12 (D) 3x 6 (A) 144º (B) 72º 44. Find the product. (C) 36º 6m 4m 5 (D) 18º (A) 24m 5 48. Parallel lines m and n are cut by transversal t. Which statement is always true? (B) 24m2 5 (C) 24m2 30m t (D) 24m2 30 1 2 3 45. What are the next three terms in the sequence? 4 5 m 6 7 8 n 13, 9, 5, 1, … (A) –4, –8, –12 (A) 5 6 (B) –3, –7, –11 (B) 3 6 (C) –2, –6, –10 (C) 2 4 (D) –1, –5, –9 (D) 1 7 2010–2011 Clark County School District 9 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released 49. Parallel lines m and n are cut by transversal t. What is the measure of A ? t A m 115° n (A) 65º (B) 75º (C) 95º (D) 115º 50. A student dilates the given triangle by a scale factor of 2. What ordered pair describes the location of point B after the dilation? A C (A) 0, 1 (B) 0, 4 B 1 (C) 1, 2 (D) 4, 2 2010–2011 Clark County School District 10 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released Free Response 1. The data below shows the total points scored by two football teams. Team A: 3 6 13 14 14 14 15 17 20 20 24 27 28 28 31 Team B: 3 6 28 35 7 9 10 10 12 14 17 20 21 24 24 (a) Use the number line to create a box-and-whisker plot for each set of data. Label each plot. Identify all key points by name and give their numerical values. (b) Using the graphs you created, which team had higher scores overall? Explain your thinking. 2010–2011 Clark County School District 1 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released Free Response 2. Maria is joining a music club on the internet. The initial cost to join is $10.00. Each song costs $1.50 to download. (a) Make a table of values that shows the relationship between the number of songs purchased (n) and total cost (c). (b) Write and graph an equation that shows this relationship. What is the maximum number of songs you could purchase if you have $20.00 to spend? (c) Explain what the y-intercept and the rate of change represent. 2010–2011 Clark County School District 2 Revised 08/02/2011 GO ON Pre-Algebra 8 2010–2011 Semester 2 Exam — Released Free Response 3. Plane X traveled 15 miles west then 20 miles due north. Plane X then flies on a diagonal path directly back to its starting point. (a) Draw and label a diagram of the plane’s route. Determine the distance of the diagonal path the plane traveled. Show your work. (b) Plane Y followed a similarly-shaped route. If Plane Y traveled 9 miles due west: i. Find the distance the plane traveled north. ii. Find the diagonal distance Plane Y traveled back to its starting point. 2010–2011 Clark County School District 3 Revised 08/02/2011 GO ON