How can I solve this

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

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.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart