I’m pretty confused so a 15 pointer

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

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.

What is the solution to the equation e3x=12? round your answer to the nearest hundredth