Ineed with these two problems

19. in a store, 1 can of soup
costs $1.80. the store also sells a pack of 6 cans of the soup. a customer who buys 1 pack saves 15% compared to buying 6 cans separately. how much money does a customer save by buying 1 pack instead of buying 6 cans separately?

What is the slope of the equation y =

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?

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?