Please help I don't understand. What are the domain and range of the graph?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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?

How many verticies does a triangular prims have