Exploring Algebraic Expressions in Day 2 Writing

The video introduces a new unit by explaining mathematical expressions, focusing on variables, coefficients, constants, and exponents. It covers translating expressions and solving word problems, including calculating costs using algebraic expressions. The teacher provides examples and clarifies common mistakes, preparing students for upcoming lessons.

Which part of the expression is the variable?

• 5

• X

• -7

• 3

What is the coefficient in the term 5X?

• -7

• 3

• 5

• X

Identify the constant in the expression 5X - 7.

• 5

• X

• -7

• 3

What does the exponent in the term n^3 represent?

• Exponent

• Coefficient

• Variable

• Constant

How would you translate 'P increased by 5' into an algebraic expression?

• P - 5

• P + 5

• P * 5

• P / 5

What operation does 'decreased by' indicate?

• Division

• Subtraction

• Addition

• Multiplication

If Meanie starts with $217 and adds $25.50 each week, what is the expression for her balance after W weeks?

• 217 + 25.50W

• 217 * 25.50W

• 217 - 25.50W

• 217 / 25.50W

In the expression 217 + 25.50W, what does W represent?

• Coefficient

• Constant

• Dollars

• Weeks

What does 'per' imply in the context of cost per pound?

• Multiplication

• Addition

• Subtraction

• Division

How would you write the total cost for W pounds of watermelon at $0.68 per pound and T pounds of tomatoes at $3.25 per pound?

• 0.68 + 3.25

• 0.68 + 3.25WT

• 0.68W + 3.25T

• 0.68W - 3.25T