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Name Math 8A Date Assessment Review HW 1. Which expression is equivalent to 36x2 – 100? (1) 4(3x – 5)( 3x – 5) (2) 4(3x + 5)( 3x – 5) 3. Kendal bought x boxes of pens. Each box contains 12 pens. She decides to keep two boxes for herself. She brings 60 pens to school. (3) 2(9x – 25)(9x – 25) Which equation can be used (4) 2(9x – 25)(9x + 25) to find the number of boxes, x, Kendal bought? (1) 2x – 12 = 60 (2) 12x – 2 = 60 (3) 12x – 24 = 60 (4) 24 – 12x = 60 2. Patricia is trying to compare the average rainfall of New York to that of Arizona. A comparison between these two states for the months of July through September would be best measured in: (1) (2) (3) (4) feet per hour inches per hour inches per month feet per month 4. What is the product of 2x + 3 and 4x2 – 5x + 6? 5. When multiplying polynomials for a math assignment, Pat found the product to be -4x + 8x2 – 2x3 + 5. He then 7. Is the set of natural numbers closed for the operations: Explain. a) addition had to state the leading coefficient of this polynomial. Pat wrote down -4. Do you agree with Pat’s answer? Explain your b) subtraction reasoning. 6. Is the sum of 3 3 2 and 4 2 rational or irrational? Explain your answer. 8. Simplify (-3 x5 y z7) 2