an archeologist divides an area using a cordinate plane in which the cordinates are measured in meters. the vertices of a secret chamber are (-1,-2) (7,-2) (7,8) and (-1,8). find the perimeter and the area of the secret chamber.

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.