Unit 4: Equations and Expressions

Expressions

100

2(x + 5)

2x + 10

200

½(x + 8)

1/2x + 4

300

⅓(6x − 9)

2x-3

400

y(2x + 5z)

2yx + 5yz

500

2x(y + z)

2xy-2xz

Expressions 2

100

6x − 3

3(2x-1)

200

5x + 10

5(x+2)

300

4x + 8x

4x(1+2)

400

3xy + 6yz

3y(1x+2z)

500

4pq − 2pr

2p(2q-1r)

Exponents & Equations

100

64=x²

x=8

200

x=(2/5)³

x = 8/125

300

16/9 = x²

x=4/3

400

2x=2⁴

x=8

500

4³⁼8^x

x=2

Expressions with Exponents

100

4+x³ when x is 2

12

200

(1/4)^x when x is 3

1/64

300

4x² when x is 5

100

400

(4x)² when x is 20

6,400

500

1/2^x+8 when x is 5

8 1/32

Bonus

100

What is the coefficient?   6x

6 is the coefficient

200

p(6+2t+5y)

6p+2pt+5py

300

The area of a square is 7² sq in. What is its side length?

7

400

A cube has edge length 5 in. Use an exponent to express its volume.

5³

500

15.57 divided by 0.3

51.9