Find the mid-point of
(-2, 1, 4), (7, 3, -1)

Can someone me with my hwplz(only the circled ones)

Which equation represents the function on the graph?

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.