The prices of backpacks at a store are $26, $22, $31, $18, $24, $22, $19, and $30. find the mean absolute deviation, (mad), of the prices. show work.

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?