Just need a quick answer

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Answer this question! 30 points and brainliest! only if you know the answer.

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?