I need help with math

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

It says factor each expression completely 8y+48

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?