Please help. (look at image)

Find the value of the variable and the length of each secant segment.

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.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42