Chapter 1 Test Corrections

# 11. 171 ÷ 32 + 4

171 ÷ 9 + 4

19 + 4

23

#12. Find the solution of 2(x – 5) = 30if the replacement set is {19, 20,

21, 22}

2x – 10 = 30

2(20) – 10 = 30

40 – 10 = 30

# 15. Simplify 12f + 6 (3 + 4f)

12f + 6 (3 + 4f)12f + 18 + 24f)36f + 18

# 17. Which values of x and y are counterexamples to the given statement:

If x – y = even number, then both x and y are even numbers.

A. X = 19, y = 13B. X = 12, y = 4C. X = 15, y = 8D. X = 22, y = 20

#26. Write a verbal expression for the algebraic expression (2 – y) * 6

A. Two minus y times six

B. Two times six minus y

C. The difference, y less than two, times six

D. Six times y minus two

# 27. Write an algebraic expression for the verbal expression: three times the sum of x and y increased by five times the product of x and 3y

A. 3x + y + 5x(3y)B. 3(xy) + 5(x +3y)C. 3(x + y) + 5(x + 3y)D. 3(x + y) + 5(3xy)