Whoever gives right answer gets brainlest

What situation is an example of an observational study

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.

Write an inequality for this sentence the quotient of a number and -5 increased by 4 is at most 8