A sawmill cuts boards for a lumber supplier. When saws A, B, and C all work for 4 hr, they cut 4200 linear board-ft of lumber. It would take saws A and B working together 5.6 hr to cut 4200 ft of lumber. Saws B and C can cut 4200 ft of lumber in 6 hr. Find the rate (in fuhr) that each saw can cut lumber.

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.