Over two summers, Ray saved $900 and $500. The polynomial 900x2 + 500x represents his savings at the beginning of the third year, where x is the growth factor. (The interest rate r is x - 1.) What is the interest rate he needs to start the third year with $1600 in savings?

A. 0.1%

B. 8.4%

C. 264%

D. 1.1%

Question

Over two summers, Ray saved $900 and $500. The polynomial 900x2 + 500x represents his savings at the beginning of the third year, where x is the growth factor. (The interest rate r is x - 1.) What is the interest rate he needs to start the third year with $1600 in savings?

A. 0.1%	

B. 8.4%	

C. 264%	

D. 1.1%

mikeyymonroe · Answer

my best guess is D or B because .1 is way too small to get that much growth and 264 is way too much