Understanding the Rule of Multiplication and Addition

The video tutorial explains a mathematical rule where you multiply a number by 2 and then add 1 to get the result. This rule is demonstrated with examples using the numbers 1, 2, and 3. Finally, the rule is generalized for any input number x.

What is the result when you multiply 1 by 2 and then add 1?

• 4

• 5

• 3

• 2

If you apply the rule to the number 2, what result do you get?

• 6

• 7

• 5

• 4

What is the outcome when the rule is applied to the number 3?

• 7

• 5

• 6

• 8

How can the rule be described for any input x?

• Multiply by 1 and add 2

• Multiply by 3 and add 1

• Multiply by 2 and subtract 1

• Multiply by 2 and add 1

Which of the following is NOT a result of applying the rule to a number?

• 3

• 5

• 7

• 9