In the ruins of an ancient civilizations, an archaeologist found pottery at (2,6) and hair accessories at (4, -1). A pole is found with one end at (7, 10) and the other
end at (14, 12). Is the pole perpendicular to the line through the pottery and the hair
accessories? Explain.

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.