Find the gcf of 18a and 20ab i really don't get this at somebody

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 measure of sty in oo below? 130 310 230 50

Solve the equation. 2x - 8(x+1)= 6(2x - 3)