use the function h(r) = 5r - 20

Question

use the function h(r) = 5r - 20

find h(2x)

Answer 1

h(2x) = 5(2x) - 20 = 10x - 20

Answer 2

h(r) = 5r - 20

To find h(2x), just replace the r with 2x:

h(r) = 5r - 20

h(2x) = 5(2x) - 20

h(2x) = 10x - 20

Answer 3

Oh, tricky!

Just like h(3) = 5(3) - 20, etc...

h(2x) = 5(2x) - 20 = 10x - 20