Question

given the function f decrisbe by f(x)=8x,find each of the following
a.) f(-12)
b.) f(6)
c.) f(31)

Answer 1

a) replace EVERY x with -12 to get

f(-12) = 8(-12) = -96


Does that make sense?

Answer 2

so i times each number by 8

Answer 3

exactly

Answer 4

8x means "8 times some number x", in part a), x was -12. So it's 8 times -12