How do you evaluate the function when x = -3, 0, and 2 for f(x) = 15x + 4?

Jun 26, 2018

Shown below

Explanation:

For each of the values of $x$ simply plug in that value in $f \left(x\right)$

Hence when $f \left(x\right) = 15 x + 4$ and you put $x = - 3$

We get $f \left(- 3\right)$ then just replace each $x$ in the expression you see with $- 3$

$\implies f \left(- 3\right) = 15 \left(- 3\right) + 4 = - 45 + 4 = - 41$

$\implies f \left(0\right) = 15 \left(0\right) + 4 = 0 + 4 = 4$

$\implies f \left(2\right) = 15 \left(2\right) + 4 = 30 + 4 = 34$