Look at the image please

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

Find the values of y: 3y^3(y^2+ 2/3y)=0

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?