Can anyone help and explain how they got the answer ASAP !!!

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

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.

What is the perimeter of an equilateral triangle if each side is (x+3)?