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small company borrows money and remains in debt to its lenders for period of time

the function f(x)=-8x2+5x+90 represents the amount of debt the Company has, in thousands of dollars, X years after opening its business

 AProximately how many years after opening its business will the company be out of debt 

a)2.9 years

b)3.4 years

c)3.7 years

d)4.1 years

 Apr 30, 2019
edited by Marshmallowfluff  Apr 30, 2019

-8x^2 + 5x + 90 = 0, solve for x

Use the Quadratic Formula to solve for x:

x =3.6811 = ~3.7 Years.

 May 1, 2019

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