Please help please help please help I really need this answers or my teacher will flunk me I will fail and get a zero

The area of a 25-inch tv screen is 300 square inches. the area of a 40-inch tv screen is 768 square inches. the are of the smaller screen is what percent of the area of the larger screen?

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.