Question

Given the function f(x) = 4 - 2x: If the domain is {-4, 0, 5}, find the range. A) {-4, 4, -6} B) {-4, 4, 14} C) {12, 4, -6} D) {12, 4, 14)

Answer 1

f(x) = 4 - 2x                   Domain = x = -4, 0, 5

f(x) = 4 - 2(-4) = 4 - (-8) = 12  

f(x) = 4 - 2(0) = 4 - 0 = 4

f(x) = 4 - 2(5) = 4 - 10 = -6

f(x) = 12, 4, -6

The range is C. 

Answer 2

It's C. Good luck on your finals!