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quadratic formula

Select the approximate values of x that are solutions to f(x) = 0, where f(x)=-8x^2 +9x+5.
A. (-1.60,1.80)
B. (-8,9)
C. (-1.13,-0.63)
D. (-0.41,1.53)

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Steve S. | Tutoring in Precalculus, Trig, and Differential CalculusTutoring in Precalculus, Trig, and Diffe...
5.0 5.0 (3 lesson ratings) (3)
You've gotten answers to two VERY similar problems.
Now it's time for you to do one. 
Follow the pattern in the two solutions you have and you should be able to find this solution.
Good luck,


This was not what I was looking for because I think the answer is D and my math partner thinks the answer is A. We are practicing for our finals in two weeks from problems in the back of our chapters and do not have an answer sheet. But thank you anyways.
Go with your partner, and work with calculator.