Given two functions, f1(x) = 2x and f2(x) = x^2, explain what is the integral of [f1(x) - f2(x)]dx over the interval [0,2]. what does this represent?​

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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?