Question

The function g is given by g(x)=−2(x+2)−6. Which of the following expresses the value of g(b−5)? Select one: A. −4b−20 B. 4b+12 C. 2b+2x−6 D. −2b

Answer 1

D

to evaluate g(b - 5) substitute x = b - 5 in f(x)

g(b - 5) = - 2(b - 5 + 2) - 6 = - 2(b - 3) - 6 = - 2b + 6 - 6 = - 2b