Acertain drug is made from only two ingredients: compound a and compound b. there are 4 millimeters of compound a used for every 7 millimeters of compound b. if a chemist uses 546 millimeters of compound b, how many millimeters of the drug will be made?

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.