What are the numbers -25.4 and 45.9 and 0 from least to greatest

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 area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

What is the sum of these mixed numbers 4 2/3+ 3 1/9