Andy is participating in a science competition that awards and deducts point-values based on the accuracy of contestants' answers. There are three rounds where participants can earn or lose points. Andy's results are given below. At the end of Round 1, he has  points. He scores  points during Round 2.Andy loses 500 points during the final round of the competition. Write a numerical expression in the first box that represents the number of points earned or lost in each round. Then write Andy's final point total at the end of the competition in the second box. ​