About half of the world’s population of 7.8 billion people live in urban areas. How many people live in urban areas?

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.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.