What is the answer to0.3x0.5%0.86-5

The equation respenting the left table is

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

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?