Help and can you explain how you got the answer???

Write 17/20 as a decimal and as a percent.

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?

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2