What is 862.473 rounded to the nearest whole number?

The weekly revenue for a company is r = 3p^2 + 60p + 1060, where p is the price of the company's product. what price will result in a revenue of $1200.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)