140000000 in the standard form

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.

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

3/4 = c/36 i need with this fraction proble.