Mulitiply. What is the product (3*10^(9))*(2*10^(17)) in scientific notation

Answer this question only if you know the answer! 30 points and

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?

If a || b and e || f , what if the value of y ?