HELP FAST I JUST NEED 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.

The function representing david's miles per month if f(m)= 115m + 5. what does the 115 represent

Ndicate in standard form the equation of the line through the given points. p(0, -4), q(5, 1)