Also Do this one too! Ill give brainest and 5 points, ( if you answer fast) Ps I will NOT accept links because i will report you answer

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

Someone me i need with this stuff

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.