Over two summers, ray saved $900 and $500. the polynomial 900x 2 + 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. 8.4%
b. 264%
c. 0.1%
d. 1.1%

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

- (2, -7)

- lines r and s and lines t and u must be parallel