Find the equation in standard form of the line passing through the points (2,-3) and (4,2)

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

What is the 12th term of b(n)=-4-2(n-1)

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?