The cost of lollipops at Bulk Barn varies directly with the amount one buys. If Mary bought 1.3 kg of lollipops for $5.43, what is the rate of change?

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?