3 1/4 - (-2 2/3

I will give 15 points

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?

What is the standard form of -5x^2+2x^4-11+x^3+3x

16 more than the product of 5 and p