Question

Which expression has a solution of 5, if r = 3?

r - 8

r + 2

15 - r

r + 8

Answer 1

r+2

Explanation:

Answer 2

r + 2

Explanation:

To determine which expression evaluates to 5, substitute r = 3 into each expression and evaluate

r - 8 = 3 - 8 = - 5 ≠ 5

r + 2 = 3 + 2 = 5 ← evaluation gives 5

15 - 3 = 12 ≠ 5

3 + 8 = 11 ≠ 5