What's the answer to this problem?

Choose the triangle with x equal to 17.

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?

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i