When Isabel’s 3DS is fully charged it lasts for 2 1/2 hours. If she only charged it for 1/5, for how long would it last?

The jones farm has 24 cows that each produce 52 quarts of milk a day. how many quarts are produced each day altogether

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

How can you find the mean absolute deviation (mad) for this set of data?