4/3cos2x - (pie)^piex - 4xcot(pie)

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Determine the area of a triangle with (see picture below)

How does the graph of y = 3x compare to the graph of y = 3-x?