Explain what the MAD means in the context of Robin and Evelyn data

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.

24m^2n+30mn^2+18mn, a sweet challenge!