When Ruby was 2 years old, her parents invested $2000 in a money market account with an annual average interest rate of 8%. Her parents plan for Ruby to use the money in the account to pay for college in x years. Which of the functions below best represents the amount of money, y, in the account when Ruby goes to college?

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !