What’s the answer to this ???

Acircle has a circumference of 28.36 units what is the diameter of the circle

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?

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply