Given: ab || dc and m22 =m24 prove: ad || bc statements 1. ab dc 2. m 22=m24 3. z1 and 24 are supplements 4 2 5. mz1+mz2 = 180° reasons 1. given 2. given 3. same side interior angles thm 4. def. of supplementary angles 5. substitution

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.