Quadrant I Quadrant II Quadrant III Quadrant IV xxx-axis yyy-axis (2,4)(2,4)left parenthesis, 2, comma, 4, right parenthesis (0,-3)(0,−3)left parenthesis, 0, comma, minus, 3, right parenthesis (-1, \dfrac12)(−1, 2 1 )left parenthesis, minus, 1, comma, start fraction, 1, divided by, 2, end fraction, right parenthesis

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.