Triangle a is reflected in the line x =1

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?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)