# How do you find the range of s(z) = 5 - 4z given D={-2,0,2}?

Sep 15, 2015

R={13,5,-3}

#### Explanation:

Since D = {-2,0,2},
R = s(D) = {s(-2),s(0),s(2)}
={$\left(5 - 4 \cdot \left(- 2\right)\right)$,$\left(5 - 4 \cdot 0\right)$,$\left(5 - 4 \cdot 2\right)$}
={13,5,-3}