Solving Integrals: Can't Get the Right Answer?

[sntawkin]

If you let the first attatchment be true then to find the second attachment you need to...

There was a first part to this question and I got it right. Now I try the equation and I get the integral from 11 to 9.5 = 10 + -9 + 2. Then f(x) would equal 3. If you enter that into ((9(f(x) -2) then you get 25 but that is wrong. then i tried putting 10, -9 and 2 into the equation and adding them to get 21 but that is wrong as well. I don't know where to go from here.

 

[rocomath]

post it elsewhere and link it here, we can't see any of your pics till they're approved.