I PUT 83 POINTS INTO THIS PLS ANSWER ALL 3 PLS I NEED IT TY

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.

Rounded to the nearest tenth, what is the value of x

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.