Tammi and Orlando each decomposed 1 3 4 . Tammi wrote 2 4 + 2 4 + 3 4 . Orlando wrote 4 4 + 3 4 . Who was correct? Explain.

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.