Which two ratios are equivalent to 24/9 a.8/3, 72/30 b.8/3, 48/18 c.12/5, 48/18 d.6/2, 5/20

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.