If you horizontally stretch the quadratic parent function, f(x) = x, by a factor of 4, what is the equation of the new function?

Need solving this second acceleration problem.

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?

Can you divide 25 into 4 equal groups? explain why or why not.