68. A small country has the following taxation system for its police officers. An officer starts her career with a yearly salary of 40 units, and she has no taxes to pay during her first year of work. At the end of each year, she gets a five percent raise and a one-unit increase in taxes. Let s, denote the salary of the police officer after n years of work. (a) What is the initial condition, so? (b) Use the description above to find $1, $2, and 53. (c) Find a recursion for $