Consider the function rule f(x)=9x- 7 . a. Find f(4) b. Find f(-2 ) . c. Show or explain how the equation 9x-7=65 can be solved using an “undoing process.” Report a solution to the equation.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?

Me. i can't figure out this question. give an explanation too. .