241.78 divided by (-3.85)

Which of the following are accepted without proof in a logical system? check all that apply.

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.

If f(x) = 5х – 2 and g(x) = 2х + 1, find (f – g)(x).