Identify the quadratic function that contains the points (-1,-4), (0,0) and (2,-10). f(x) = - 3x2 + x f(x) = 3x2 - x f(x) = - 3x2 - x f(x) = 3x2 + x

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?