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A review of Unit 2 with error analysis • The graph below compares cups to pints. Which of the following ordered pairs would also satisfy this relationship? A. B. C. D. (4, 2) (2, 4) (2, 0) (1, 2) Disagree The correct answer is A. Mr. Hague purchased different types of light bulbs for a jack-o-lantern he created for Halloween. The information about the bulbs he purchased is shown in the table below. Number Purchased Total Cost 10-Watt Clear 5 $14.85 13-Watt Warm White 30 $119.40 20-Watt Capsule Bulb 6 $10.74 34-Watt Cool White 90 $147.60 Type of Light Bulb Agree Which type of light bulb costs the least amount per light bulb? 34-Watt Cool White The ratio of girls to boys in a class is 7:4. If there is a total of 33 students in the class, how many are girls? 21 Disagree The table below shows the number of each item sold at the concession stand. What might the ratio 2:3 represent? Item Popcorn Nachos Hot Dog Candy Bar Quantity Sold 20 15 25 30 The number of nachos to candy bars. Disagree. The number of popcorn to candy bars. The table below shows the cost for varying number of DVDs. If the relationship stays the same, determine the value of n. Number of DVDs 3 5 12 20 Cost $21 $35 $84 n 20 DVDs would cost $140. Agree Twenty percent of what number is 10? 50 Agree Using the table below, which ratio compares the number of music downloads for Taylor Swift to the number of music downloads for Shawn Mendes? A. 3:4 Name of Group B. 3:2 C. 4:3 Taylor Swift D. 2:3 Number of Music Downloads (in thousands) 8 Justin Beiber 10 Shawn Mendes 12 Disagree. The correct answer is D. Mrs. Moreland drove 210 miles in 3.5 hours. Ms. Winter drove 244 miles in 4 hours. Who drove at the faster rate of speed per hour? Mrs. Moreland drove at the faster rate of speed at 60 miles per hour. Disagree. Ms. Winter drove at the faster rate of speed which is 61 miles per hour • In a class of 40 students, 25% returned their permission slips for the school field trip. How many students did not return their permission slips? 10 students Disagree. 30 students did not return their permission slips. At Kroger, the ratio of apples to grapes is the same as the ratio of oranges to bananas. If the ratio of apples to grapes is 6:7, then which of the following statements is possible? A. There are 14 oranges and 12 bananas B. There are 12 oranges and 16 bananas C. There are 18 oranges and 21 bananas D. There are 12 oranges and 24 bananas Agree Which value of x will make these ratios equivalent? 15 45 = 5 𝑥 The value of x should be 15. Agree If we know that 6 cups of flour is used to make 30 cupcakes, figure out how many cupcakes are made with 18 cups of flour? 50 cupcakes are made with 18 cups of flour. Disagree. 90 cupcakes The prices of 4 different bottles of lotion are given in the table. Which size bottle is the best value? A. The 25-ounce bottle B. The 15-ounce bottle C. The 10-ounce bottle D. The 5-ounce bottle Size Price 24 ounces $4.50 15 ounces $2.30 8 ounces $1.60 4 ounces $0.95 Agree. The ratio of boys to girls in a class is 6:4. If there are 60 students in the class, how many are boys? 24 boys. Boys Girls = 60 Disagree. 36 boys are in the class! Mark and Fred had some money in the ratio 6:1. Mark gave half of his money to Fred. Use the diagram to find the ratio of the amount of money Mark had left to the amount of money Fred had in the end. 3:2 Before After Disagree. 3:4 The table below represents the ratio of witch hats to jack-o-lanterns sold for Halloween. Complete the ratio table and find the value of x. The value of x is 54. Witch Hats Jack-OLanterns 9 36 45 x 15 60 75 90 Agree