quadratic formula

Question

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)

Answer 1

Christine,

 

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,

SKS