Can somebody please help me

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.

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.

#7. m is the midpoint of pq, the diameter of the circle o is 13in. and rm = 4in. find pm find pq