Can someone me solve this problem (-8i)

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

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?

Is a square always, sometimes, or never a parallelogram