Question

What is the value of t in the equation 3(2t + 5) = 5t + 25?

5
6
10
35
Question 2(Multiple Choice Worth 4 points)
(7.02)
What is the value of z in the equation 3z − 7 = 14?

3
4
7
21
Question 3(Multiple Choice Worth 4 points)
(7.02)
How many solutions can be found for the equation 3x − 2 = 3x + 5?

Zero
One
Two
Infinitely Many
Question 4(Multiple Choice Worth 4 points)
(7.03)
The steps below show the incomplete solution to find the value of x for the equation
7x − 3x − 4 = −1 + 21:

Step 1: 7x − 3x − 4 = −1 + 21
Step 2: 7x − 3x − 4 = 20
Step 3: 4x − 4 = 20

Which of these is most likely the next step?

4x = 24
4x = 16
4x = 5
4x = 80
Question 5(Multiple Choice Worth 4 points)
(7.01)
What is the value of b in the equation b + 8 = 13?

5
8
13
21
Question 6 (Essay Worth 5 points)
(7.01)
Brooke solved the equation below:

6r = 72
6r − 6 = 72 − 6
r = 66

Is Brooke’s solution correct? If the solution is incorrect, explain why it is incorrect and show the correct steps to solve the equation.



Question 7 (Essay Worth 5 points)
(7.03)
An equation is shown below:

6(2x - 11) + 15 = 21

Write the steps you will use to solve the equation and explain each step.

Answer 1

Answer:

1. 10

2. 21

3.0

4.4x=24

5.5

6.incorrect

6r=72

r=72/6

r=12

7. 12x-66+15=21

12x=21-15+66

12x=72

x=72/12

x=6