Marta’s starting annual salary is $24,500. at the beginning of each new year, she receives a $2850 raise. write a recursive formula to find marta’s salary f(n) after n years. what will marta’s salary be after 5 years?

There are several information's already given in the question. Let us write them down first.
Marta's starting annual salary = $24500
Amount of raise she gets each year = $2850
The number of years is represented by = n years
Then
f(n) = 24500 + 2850(n)
After 5 years, salary of Marta = 24500 + (2850 * 5)
                                                = 24500 + 14250
                                                = 38750 dollars.