For Each Expression Below, Rewrite the Expression Without Parentheses Or Rewrite With

Name:______Per:______Core Connections Chapter 3 Quiz 3 -- practice Date:______

1. Find the rates for each of the following situations. Show your work.

Jennifer babysat for 9 hours and earned $73.80. What is her hourly rate of pay?

2. Solve for x Simplify and do a check.

–2x + 4 – 5x = 2(7 – x) + 4x check:

3. Examine this tile pattern and answer the questions below.

Figure 3 a. Draw Figure 4.

b. Write a rule that describes this pattern.

c. Which figure number has 64 squares? Show or explain how you figured it out. Name:______Per:______Core Connections Chapter 3 Quiz 3 -- practice Date:______

4. Multiple Choice: Which equation(s) below represent the same information? Explain how you know . a. 1 + x + (–1) – ( 1 – 1) + 1 + 1 = 1 + x + 1 + 1 – 1 – (x – 1) b. 2 + x + 2 – 2 = x + 2 – (x + 1) c. 3 + x + 4 = 2x + 3 + 3 d. 2 + x + (-2) – ( 2) - 2 = x + 2 – (x – 1) - 2

5. Three points are on a line: (-3, 9) ; (2, -1); and (3, -3) a. Find three more points that lie on the line. b. Find a rule for your line. Verify your rule is correct using one of the original points. (2 points)

6. For each expression below, rewrite the expression with parentheses or rewrite without parentheses if the parentheses are already there. (2 points each) a. 4(2y -7) = ______b. 3(3x – 2) = ______c. ______= 12x -15 Name:______Per:______Core Connections Chapter 3 Quiz 3 -- practice Date:______

1. 8.20 2. x=-10/9 3. a. see figure on right.

3 b. 3n – 2 3 c. n = 22 3 1 3 4. a, b, and c are equivalent 5. a. answers will vary. b. y = 3-2x 6a. 8y – 28; b. 9x – 6 c. 3(4x – 5)