Find the x intercept of the parabola with vertex -3,-4 and y intercept 0,13

Look at attachment. has all info needed. need

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.

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.