Air Test Prep Day 5

What is the prime factorization of 20 written in exponential notation?

• 2 x 5
• 1 x 20
• 2 x 10
• 2² x 5

The following prime factorization represents which number:  2² x 3 x 7

• 14
• 84
• 42
• 70

A prime number...

• has one factor.
• has more than 2 factors.
• has 100 factors.
• has exactly 2 factors: 1 and the itself.

A composite number ...

• has more than 2 factors.
• has one factor.
• has at least 10 factors.
• is always a really big number.

If the expanded form is 2⋅2⋅2⋅3⋅3⋅5⋅7 what would the exponential form be?

• 2⋅3⋅5⋅7
• 2³⋅3²⋅5⋅7
• 2²⋅3²⋅5⋅7
• 8⋅9⋅35

2 x 2 x 2 is the prime factorization of...

• 6
• 12
• 22
• 8

Is 5, a prime or composite number? 

• Prime
• Composite

Find the prime factorization of 30.

• 30 = 5 x 6

• 30 = 2 x 3 x 5

• 30 = 2 x 3 x 6

Create an expression that represents the statement “5 less than a number n.”

Let x = 4 and y = 5.

Evaluate the expression 2x + 7y.