Plz me quick i am so confused plz me plz answer both i really need

What numbers are included in the set of integers? what numbers are not included?

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.

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y