Help lol!! okay okay where do i plot the equations!??

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

With number 11 ( show how you got the answer)

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25