3.)
A telephone pole casts a shadow that is 40 feet long. At the same time of day, a fence
post casts a shadow that is 5 feet long. The fence post is 3 feet high. How high is the
telephone pole?

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.