Use x=1+r, where r is the interest rate paid each year. Write a model polynomial, C(x), that represents the final amount of an 8-year investment if $500 was deposited at the beginning of the first year, $800 was deposited at the beginning of the fourth year, and an additional $370 was deposited at the beginning of the eighth year.

Question

C(x)=500x^8+800x^5+370x

C(x)=500x+800x^5+370x^8

C(x)=500x^8+800x^4+370x

C(x)=500x^8+800x^4+370

Answer 1

C(x)=500x^8+800x^4+370