Guessing Birthdays Using Algebra part 2

What is the main concept used by the teacher to guess birthdays?

• Calculus

• Trigonometry

• Algebra

• Geometry

What variable does the teacher use to represent the month number?

• D

• M

• Y

• N

What operation is performed after multiplying the month number by 5?

• Multiplying by 7

• Adding 7

• Subtracting 7

• Dividing by 7

In the example of American Independence Day, what is the month's number?

• 6

• 7

• 8

• 9

What additional number is added to the final calculation to help determine the birthday?

• 105

• 205

• 305

• 405