Question

What is the range of the function f(x) = -2(x+1)-2, when the domain is {-5, 0, 5}?

A {-5,0,5}
B {-11,-1,9}
C {-14,-4,6}
D {-10, 0, 10}

Answer 1

Answer: D

Explanation:

To find the range, substitute each element in the domain into the function.

`f(-5)=-2(-5+1)-2=-10\\\\f(0)=-2(0+1)-2=0\\\\f(5)=-2(5+1)-2=10`