This is similar to the last one but this is also an quiz that’s worth a major. Can anybody help?

Which of the following expressions are equivalent ?

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?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.