I need to find out what is the slope

For which pair of functions is (gof)(a)=|a|-2?

Select the number of ways in which a line and a circle can intersect

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.