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%

Answer 1

b

Answer 2

wait

Answer 3

is that 900*2?

Answer 4

it is 900x^2

Answer 5

oh

Answer 6

would it still be b?

Answer 7

I think it's b, at least through the calculations I made xD

Answer 8

thank you

Answer 9

yea its b