Write the polynomial 3ab^2+5a^3-7b^3+4a^2b in descending powers of a.

This question awards 100 ! i really don’t want to fail i will also mark you !

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

Landon drove 103.5 miles on tuesday 320.75 miles on wednesday and 186.30 miles on thursday for work his company pays 0.07 $ for each mile he drives he expects to be paid more than $40,000 is he correct explain