11. What is the value of x that will make the expression
undefined?
x2+2x+1
A. -1
C. 1
B. O
D. 2
12. Which of the following represents the phrase "The ratio of twice the sum of x and
y to the difference of x and twice y"?
2x+y
C.
x-2y
2(x-y)
A. 2x+y
B.
2(x+y)
x-2y
D.
2x+2y
2x-2y
13. Which of the following satisfies the phrase "The sum of five and one third of a
number n divided by the sum of twice a number y and 3"?
5+n
A.
C.
2y+3
2(+3)
5+n+2y
(5+n)+2y
B.
D.
3
3