A new toy store is opening next week

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

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?

What is the gcf of 20c^3-5c^4+30c^6