At the beginning of this lesson, Stuart was trying to estimate his grade assuming he scores 90% on the rest of his quizzes. If Stuart takes three more quizzes and his assumption is correct, what will his average quiz grade be? Stuart Dent has accumulated 37 points on ve quizzes. each worth 10 points. He calculates his quiz average by dividing his earned points by the total points. The result is the rational number 35%. Stu is feeling fairly condent about the upcoming unit, and estimates that he should be able to get nine out of ten points on the next few quizzes, but he is unsure about how mamr quizzes there will be. He decides he can estimate his total quiz average with the expression 3; r it, where q is the number . . . . . 3? + it; . of quizzes 1n the next unit. Just as 50 1s a rational number. 50 + we is a rational expression