Question

Evaluate 4(a – 3b) when a = –4 and b = 6.

A.
72

B.
56

C.
–56

D.
–88

Answer 1

4(a – 3b)

4(-4 – 3b) ... replace 'a' with -4 (since a = -4)

4(-4 – 3*6) ... replace 'b' with 6 (because b = 6)

4(-4 – 18)

4(-22)

-88


Therefore, 4(a – 3b) = -88 when a = –4 and b = 6

Answer 2

Evaluate –6(x – 2y) when x = –3 and y = –5

Answer 3

its still open