Question

What is the value of F(x), if x = -5? F(x) = 7x + 15 O45 0 2.9 O-20 O -40

Answer 1

f(x)=7x+15

To find the value of f(x) when x=-5, we need to substitute x=-5 in f(x):

f(-5)=7(-5)+15

f(-5)=-35+15

f(-5)=-20