Wen takes a job with a starting salary of $100,000 for the first year. She earns a 3% increase each year. What does S5 represent?

I'm assuming S5 is the salary after 5 years? you should include that when asking a question.

y = years
S = Salary after y years

equation:
S(y) = 100,000(1.03)^y

S(5) = 100,000(1.03)^5
S(5) = 115,927.41