A LGEBRA R EVIEW March 2013

#1 Jay mows lawns and washes cars to earn money. He earns $8 for each lawn he mows. He earns $5 for each car he washes. On Friday, he mowed 3 lawns and washed 3 cars. On Saturday, he spent $15 of the money he earned. Which expression shows the amount of money Jay had left.? A) 3 x 8 + 5) — 15 B) 3 x (8 + 5) — 15 C) ( ) — 15 D) (8 + 5) — 15 x 3

#8 Gavin took 2 packs of colored pencils to school. He had a total of 26 colored pencils. One pack contained 6 fewer pencils than the other. Which expression shows how to find the number of pencils in the smaller pack? A) (26 2) – 6 B) (26 2) + 6 C) (26 – 6) 2 D) (26 – 6) x 2

E XAMPLES (5 x 7) + (5 x 9) can be written 5 x (7 + 9) 5 x (7 + 9) (4 x 3) + (4 x 5) + (4 x 8) can be written 4 ( ) 4 ( )

#2 Which mathematical expression is equivalent to the number sentence below? Subtract 15 from 45, and then divide by 3 A) 15 — 45 3 B) (45—15) 3 C) (15—45) 3 D) 3 (45—15)

#3 The Quotient of 10 and x is 6 A) 10x = 6 B) 10 6 = x C) 1x + 10 = 6 D) 10 x = 6

#4 Ninety-nine is three times a number minus 1 A) 99 = 3 + x – 1 B) 99 = 1 – (3) C) 99 = 3x + 1 D) 99 = 3x – 1

#5 The quotient of twenty and five more than a number is seventeen. A) 20 = 17 x + 5 B) 20 x = 17 C) x = 17 D) 20 = 17 5x

#6 The quotient of two numbers is equal to the sum of those numbers. A) x + y = z y B) x y = x – y C) x y = x y D) x y = x + y

#7 Claudia’s car averages 24 miles per gallon of gasoline. If she drives n miles, how many gallons does she use? A) n + 24 B) n – 24 C) n x 24 D) n 24

#8 Gavin took 2 packs of colored pencils to school. He had a total of 26 colored pencils. One pack contained 6 fewer pencils tan the other. Which expression shows how to find the number of pencils in the smaller pack? A. (26 2) – 6 B. (26 2) + 6 C. (26 – 6) 2 D. (26 – 6) x 2

#9 Shane has a $1-coupon for a box of cereal priced $3.00. It is double coupon day at the grocery store. Shane gets double the value of his coupon. Which expression shows how much Shane will pay for the box of cereal? A. (3 – 2) x 1 B. 3 – (2 x 1) C. (3 – 1) x 2 D. 3 – (2 + 1)

#10 A printer prints 12 pages per minute. Which will determine the total number of pages that can be printed by 3 printers in an hour? A. (12 x 3) x 60 B C. (12 + 3) x 60 D. 12 x