15. Three more than the quotient of a square of
a number and six is eight.
A) 3+ 6/x²=8
B) 6/x² -3=8
C) x²/6 +3=8
D) 3-x² -6=8
16. How many variables are in the algebraic expression 7fg +4?
17. Which of the following is the literal coefficients of 3x²?
A.2
B. 3
C.x²
D.x
18. Which of the following is an ascending order in b?
A. b² - 2a + 9ab
B. a²b - 5ab³ + a7b5
C 3b7 + a² + 2b6
D. 8b7 - 5a³b³ + 2a²b
(no. 18 the big numbers should be small like ²³⁴)​