Chapter 7 Review

Writing Expressions

100

Write the following using Algebra:

Twice a number

2x

200

Write the following using Algebra:

The quotient of 12 and a number.

12/x

300

Write the following using Algebra:

3 fewer than a number, t

t-3

400

Write the following using Algebra:

The difference of a number split evenly into 3 groups and 2.

x/3 - 2

500

Write the following using Algebra:

Four less than the product of 2 and a number.

2x-4

Evaluating Expressions

100

Evaluate when x=2, y=5, and z=10

4x

8

200

Evaluate when x=2, y=5, and z=10

y-3

2

300

Evaluate when x=2, y=5, and z=10

9z-5

85

400

Evaluate when x=2, y=5, and z=10

6y-10

20

500

Evaluate when x=2, y=5, and z=10

5z+10

   3x

10

Combining Like Terms

100

x+x+4x

6x

200

12b+5b+-4b

13b

300

3x + 5 + 2x - 1

5x + 4

400

13y - 4 + y

14y - 4

500

12x + 4y + 3 + 2x - 2y - 1

14x + 2y + 2

Distributive Property

100

2(x+1)

2x+2

200

3(4y+3)

12y+9

300

4(10+3x)

40+12x

400

5(2x-7)

10x-35

500

3(4x+1) + 2(x-1)

14x+1

Word Problems

100

Write as an Algebraic expression:

You make $14 per hour at your job. Write an expression for how much you make after h hours.

14h

200

Sam had c cookies and gave 12 away to his friends. Write an expression for how many cookies Sam had after giving some away to his friends. 

c-12

300

Joe is 5 years older than Bill. Write an expression to find Bill's age if you know Joe's age, j.

j-5

400

You sign up for a streaming service that charges you $13 to sign up and then $2 per month after that. Write an expression to show the amount of money you will pay after m months.

13 + 2m

500

Sara brought 1/3 of her pencils to school. She then gave two away to her friends. Write an expression to show how many pencils she had at school after giving some away to her friends. Use p to represent the total number of pencils she had at the start of the day (at home).

p/3 - 2