9. Write the expression "the ratio of two less than thrice a number n and four" in symbols. A. 2-3n 371-2 B. 4 2<3n C. 3n<2 D. 4 10. What is the expanded form of the expression 2xy3? A. 2.X'Y Y Y C.2.X*XX•Yoyoy B. 2.X*XXY D.2.2-2.X*X*X:y Yoy 11. A. 7 What is the degree of the expression X5-2x4y2 + 7xy3? B.6 C. 5 D.4 12. Algebraic expressions can be classified according to the number of terms. How many terms do we have in 3x2y + 5xy2 - 5? A. B. 2 C.3 D. 4 12