-5(x+7)<-10 -5x-35<-10 +35. +35 -4x<25 both divided by-4 x> -6.25 i flipped the sign because I divided with a negative number. and I hope you can make -6.25 into a fraction, I can't because I don't have a calculator with me :(
For each given region , the average value of over is the integral of over divided by the area of . In both cases, is a rectangle so the area is trivial.