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.

Anyone know? will mark brainliest if correct!

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

Write the factored form of this trinomial 9x^2+18x-7