Answer please quick its due

If 1 km = 0.621 miles, how many miles are in a centimeter

W-16=-12 solve each one step equation plz

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.