Reagan has $ 122 in his savings account. He deposited $ 70 each week from his job for the first five weeks of summer. In the sixth week, Reagan got a raise and increased his weekly deposits by $ 12. Write a piecewise-defined function to represent his bank balance. find f(8).

The correct answer is: 718

Given that;
Reagan has $ 122 in his savings account
Reagan deposited $ 70 each week from his job for the first five weeks of summer.
In the sixth week, Reagan got a raise and increased his weekly deposits by $ 12
to represent his bank balance
x = 8,
f(x) = 62 + 82x
= 62 + 82×8 = 718