Unit 4 Review

Simplify:
3(9 + 2d) + 4d 

• 18d+10d
• 18d-10d
• 27+10d
• 37d

Simplify the following expression:

9x + 5(x + 3)

• 9x + 15

• 45x + 27

• 14x + 42

• 14x + 15

Simplify the following expression:

2x + 3(x + 3)

• −5x + 9

• 5x + 9

• 5x + (−9)

• −5x +(−9)

Simplify:
3(9 + 2d) + 4d 

• 18d+10d
• 18d-10d
• 27+10d
• 37d

A coefficient is __________.

• the variable
• a constant
• an exponent
• the number that comes before the variable

A constant term has ______.

• no exponents
• no variables
• no numbers
• no letters

A variable can be _______?

• Any number

• Any letter of the alphabet

• only X

• only 1

What does it mean to distribute?

• To multiply the numbers inside the parentheses by the number on the outside.
• To add all of the numbers together.
• To do the order of operations.

Simplify the following expression:
-7x +5 (1 - 8x)

• -33x + 5
• 5 + 33x
• 47x + 5
• 5 - 47x

11y + 3(2y - 4)

• 5y
• 17y - 4
• 17y - 12
• 5y + 12