HELP ME LAST DAY TO SUBMIT MY MATH TEST

Solve the system of equations. y= 2x y= x^2 - 15

What is the solution set of the quadratic inequality x^2-5< or equal to 0

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?