Identify the predictor variable and the response variable. A teacher has data on the amount of homework given to students and the students' test scores. The teacher wants to determine her students' test scores based on the amount of homework she gave her students.

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?