Find the inverse ratio of 12:13

Find an equation for the linear function which has slope -10 and x-intercept -7

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

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.