Putting in h(1) would get you 1, putting in h(4) would get you 5.
2x-6 (2) is your equation. follow these steps, and you have to distribute 6 into 2 like this: 2x-12. you get negative 12 because -6 x 2 =-12. now you divide -12 by 2 which is -6. So -6=x
Time of the 20 to the x then get 420
