Question

Evaluate to Determine Equivalent Expressions.

Let x = 5 and y = 3. Use the work shown. Which expression is equivalent to:
A. -7x + 13y
B. -2x - 3y
C. 5xy
D. 9x - 34y

Answer 1

To determine the equivalent expression, substitute the given values into each expression and simplify. The correct answer is 4.

Step-by-step explanation:

To determine which expression is equivalent to -7x + 13y, we substitute x = 5 and y = 3 into each expression and simplify.

A. -7x + 13y = -7(5) + 13(3) = -35 + 39 = 4

B. -2x - 3y = -2(5) - 3(3) = -10 - 9 = -19

C. 5xy = 5(5)(3) = 75

D. 9x - 34y = 9(5) - 34(3) = 45 - 102 = -57

Therefore, the expression equivalent to -7x + 13y is 4, so the correct answer is A. 4.