Expressions Involving Numbers and Operations

The video tutorial explains how to write mathematical expressions based on verbal statements. It covers the difference of twice a number and seven, three times the difference of four times a number and one, the sum of triple a number and five, and triple the sum of twice a number and nine. Each section breaks down the verbal statement into a mathematical expression using basic arithmetic operations like addition, subtraction, and multiplication.

What is the expression for the difference of twice a number and seven?

• x - 7

• 2x + 7

• 7 - 2x

• 2x - 7

How would you express three times the difference of four times a number and one?

• 4x - 1

• 4 * (3x - 1)

• 3 * (4x + 1)

• 3 * (4x - 1)

Which of the following represents the expression for three times the difference of four times a number and one?

• 3 * (4x + 1)

• 4 * (3x - 1)

• 3 * (4x - 1)

• 4x - 1

What is the expression for the sum of triple a number and five?

• 3x + 5

• 5x - 3

• 3x - 5

• 5x + 3

How do you express triple the sum of twice a number and nine?

• 9 * (2x + 3)

• 3x + 9

• 2x + 9

• 3 * (2x + 9)