BRAINLIST!! Ekin has nine cards numbered 1 – 9. What is the probability of Ekin pulling a 7 or 9, not replacing the first card and then pulling a number 2 card?

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.