christy wants to replace the floor of her trailer with a piece of 1/2 inch sheet metal. the trailer has a length of 8.125 feet and a width of 4.2 feet. how many square feet of sheet metal are needed

Ineed me i stuck and i don’t want to get it wrong

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?

With finding limits of multi variable !