1. Which of the following is a linear equation?
a. 2x+1=0
b. x^2+1=0
c. x^3 -1=0
d. all of these

2. Which will make the sentence x+5= 2x+10 true?
a. -1
b. -5
c. 5
d. 1

3. The solution of 2x +3 =15 is _____.
a. 9
b. -9
c. -6
d. 6

4. Which statement will always be true?
a. x+4 =x+5
b. 5x=6
c. x(5+4) =9x
d. x/2 = 2/x

5. The sum of twice a number and 5 is ten. The mathematical translation of the sentence is:
a. 2 + n+5=10
b. 2 (n+5)=10
c. 2n + 5=10
d. 2n=5+10

6. What is the value of x in the equation 2x – 4 = 4?
a. -4
b. 1
c. 4
d. 8

7. What property of equality is illustrated in x – 4 = 2, and 4 is added to both sides of the equation?
a. addition
b. division
c. multiplication
d. subtraction

8. Find the value of x in the equation 2x + 5 = 11
a. -4
b. -3
c. 3
d. 4

9. My age is greater than 12 years but less than 20. Which of the following is my age?
A. 21
B. 13
C. 11
D. cannot be determined

10.If n +5 > 12, and n is an integer, what is the smallest possible value of n?
a. 6
b. 7
c. 8
d. 9