)For the right triangle shown, what is the tangent of angle A?

Could somebody me with this radical simplification?

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.

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.