Katie T.

asked • 12/15/13

I need to check my answer for this practice problem.

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)
 
I believe the answer is A. My math partner thinks it is D. Who is right and did we miss a step?

Katie T.

More confused than before.
Report

12/15/13

2 Answers By Expert Tutors

By:

Steve S. answered • 12/16/13

Tutor
5 (3)

Tutoring in Precalculus, Trig, and Differential Calculus

Parviz F. answered • 12/15/13

Tutor
4.8 (4)

Mathematics professor at Community Colleges

Katie T.

I am even more confused than before, someone please help. Am I right or could you show me how to do this properly.
Report

12/15/13

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