Question

Evaluate each expression:

7. For all x, 5 – 3(x – 4) = ?
A. -3x + 17
B. -3x – 7
C. -3x + 1
D. -3x – 4

Show Your Work

Answer 1

A. -3x + 17

Explanation:

5 - 3(x - 4) use the distributive property: a(b + c) = ab + ac

= 5 + (-3)(x) + (-3)(-4)

= 5 - 3x + 12 combine like terms

= -3x + (5 + 12)

= -3x + 17