Need help with Surface Area homework (Pls Help)

Add the fractions and simplify 1/2+ 1/3

Question 13 (1 point) jerome is starting a new job. his contract states he will earn $42,000 the first year, and will get a 4% raise per year. which function s(x) represents jerome's salary after a certain number of years, x?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.