Toshiro has $850 to invest. He can invest in a savings account that has an annual interest rate of 3.7%, and he can invest in a money market account that pays about 5.5% per year. Write a polynomial to represent the amount of interest he will earn in 1 year if he invests x dollars in the savings account and the rest in the money market account.

Question

anonymous · Answer

Just take the amount he'd have in either one and associate it with x.

anonymous · Answer

What do you mean?

anonymous · Answer

@Numb3r1 you their ??

anonymous · Answer

The one with 3.7% interest (savings account) pays 1.037 times his original investment at the end of the year. Find the same number for the one with 5.5% interest, then associate one with x and one with (1-x).

anonymous · Answer

hi @Numb3r1  please correct me if i m worng
x(1+0.037)+(800-x)(1+0.055)

anonymous · Answer

Looks good. Now just distribute and simplify.