Dan is a software salesman. His base salary is $1700, and he makes an additional $120 for every copy of History is Fun he sells.
Let P represent his total pay (in dollars), and let N represent the number of copies of History is Fun he sells. Write an equation relating P to N. Then use this equation to find his total pay if he sells 29 copies of History is Fun.
We know that P is 1700, plus 120 for every copy of the book he sells. As a result, P=120N+1700. If N=29, we have P=120*29+1700, or P=3480+1700, so P=5180.
Each term is half of the previous one, so the common ratio is 1/2. Then to get from the first term to the nth term, you have to take n - 1 steps, multiplying by 1/2 each time and by 6000 to account for the first term.
