6) Carpeting costs $9.99 a yard. If Jan buys 17.4 yards, how much will it cost here (Round your answer to the nearest hundredth)
Please step by step explanation

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.