A charitable fund's balance is modeled by y = -4.1x2 + 7.1x + 145, where y is the balance and x is the years after 1996. If no money is added to the fund, in how many years will the fund have a balance of 0? Round to the nearest year.
A. 6 years
B. 7 years
C. 8 years
D. 9 years

Question

A charitable fund's balance is modeled by y = -4.1x2 + 7.1x + 145, where y is the balance and x is the years after 1996. If no money is added to the fund, in how many years will the fund have a balance of 0? Round to the nearest year.
	A.	6 years
	B.	7 years
	C.	8 years
	D.	9 years

anonymous · Answer

no fund means the balance is 0
since y is defined to be the balance you want to make y 0
then the question is for which x is this the case?
so you solve it for x and will get your answer when you rounded it up

anonymous · Answer

7 years.Solve the quadratic equation