Sarah was 50 1/4 in tall and she was 12 years old she was 4 and 1/2 inches tall when she was 11 years old how much did she grow during the year

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?