1. Is the actual equation, so this is Given
2. removing the parenthesis is the Distributive Property
3. Combining like terms.
4. They add 6x to both sides, this would be the Addition Property of Equality
5. Subtract 4 from both sides, this is the Subtraction Property of Equality.
6. Divide both sides by 8, this would be the Division Property of Equality.
Answer:
Step-by-step explanation:First one is 2
Answer:
0.63
Step-by-step explanation:
Using the fundamental counting theorem, we have that:
- 648 different area codes are possible with this rule.
- There are 6,480,000,000 possible 10-digit phone numbers.
- The amount of possible phone numbers is greater than 400,000,000, thus, there are enough possible phone numbers.
The fundamental counting principle states that if there are p ways to do a thing, and q ways to do another thing, and these two things are independent, there are ways to do both things.
For the area code:
- 8 options for the first digit.
- 9 options for the second and third.
Thus:

648 different area codes are possible with this rule.
For the number of 10-digit phone numbers:
- 7 digits, each with 10 options.
- 648 different area codes.
Then

There are 6,480,000,000 possible 10-digit phone numbers.
The amount of possible phone numbers is greater than 400,000,000, thus, there are enough possible phone numbers.
A similar problem is given at brainly.com/question/24067651
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