Solve for x based on the angle relationship

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

A(t)=728(1+0.04)^t how much money did aditya originally invest

Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. what does the value 42,000 represent in the function?