Eric had 4/7 of a spool of yarn. He used 3/7 of his yarn for a project. What fraction of the spool was used for the project? Write your answer in simplest form.

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?