Use x=1+r, where r is the interest rate paid each year. Write a model polynomial, C(x). Represent the final amount of a 7-year investment if $5,000 was deposited at the beginning of the first year, and $2,000 was deposited at the beginning of the third year.
C(x)=5,000x^7+7,000x^4
C(x)=5,000x^7+2,000x^3
C(x)=5,000x^7+2,000x^4
C(x)=5,000x+2,000x^3
1 answer
C(x)=5,000x^7+2,000(x+1)^2