(a. jk has endpoints at -12 and 4 on a number line. what is the
coordinate of its midpoint?

Explain the answer and how to do it

What are the sotions to the quadratic equation 9x^2=4

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?