Kylie surveyed seven classmates about the number of pieces of fruit they eat each week. 9, 4, 6, 2, 11, 10,7

a. What is the mean absolute deviation of the data set?
b. What does this value mean in terms of the data set?​

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.