Unit 1 Review

Language of Algebra

100

What is the coefficient in "3.5x - 2"?

3.5 

200

What is the coefficient in: 5.8x + 2

5.8

300

What is the constant in: 15z - 20 

-20

400

What is the variable in: 15b - 12

b

500

The expression "150x - 200" has two terms. True or False? 

True 

Distributing

100

3(4x + 2)

12x + 6

200

5x(4y - 2)

20xy - 10x

300

- (7y - 2)

-7y + 2

400

-4(2x² + 3x - 1)

-8x² - 12x + 4

500

-a(2y - 3x + 4y)

-6ay + 3ax     OR     3ax - 6ay

Evaluating Expressions

100

Evaluate 3x for x=1

3

200

Evaluate 5m - 20 for m = 2

-10 

300

Evaluate 5x + 100 for x = 10

150 

400

Evaluate 7.5b + 2.5y for b=2 and y = 4

25

500

Evaluate 3x + 5b for x=2 and b=-5 

-19

Mixed

100

Are "3x" and "2x + x" equivalent? 

Yes

200

 Distributing 6(3x + 4y) gives you 18x + 24y. True or false?

True 

300

Are "15x + 3y" and "3(5x) -2y - y" equivalent? 

No

400

Simplify the following expression: 20x – (3.5x – 10)

16.5x + 10

500

Are the expressions 7(3x - 2) and 15x - 14 equivalent?

N0

Simplify Expressions

100

Simplify: (2.5c - 3) + (-0.5c + 5)

2c + 2

200

Simplify: 20y + 15x - 15y 

5y + 15x

300

Simplify: 1/2 x + 3.5 + 1/4x 

3/4 x + 3.5

400

 Simplify: (6x - 2y - 5)  - (3x + 2y - 3)

 3x - 4y -2

500

Simplify: 15y + 20x – (40x – 18y)

33y – 20x