The mean growth of the thickness of trees in a forest is found to be 5 cm/vear with a standard deviation of 1 cm/year. what is the w-score corresponding to 1 cm/year?

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.