Solve Real-World Problems

The video tutorial introduces the concept of variables in mathematics, explaining how they represent unknown quantities in equations. It provides examples to illustrate solving equations for variables, such as determining the number of sugar cookies baked and calculating the remaining balance in a checking account. The tutorial concludes with a practice problem for viewers to solve, reinforcing the skills learned.

What is a variable in the context of an equation?

• A fixed number

• A letter or symbol representing an unknown quantity

• A mathematical operation

• A type of function

In the cookie problem, what does the variable S represent?

• The number of sugar cookies

• The number of chocolate chip cookies

• The number of peanut butter cookies

• The total number of cookies

How do you isolate a variable on one side of an equation?

• Divide both sides by the same number

• Subtract the same number from both sides

• Add the same number to both sides

• Multiply both sides by the same number

What was the final balance in Mark's checking account after all expenses?

• $185

• $270

• $345

• $177

Which of the following expenses did Mark NOT have?

• Shirt

• Lunch

• Sneakers

• Groceries

How much money did Tessa have left after paying her bills and buying groceries?

• $368

• $243

• $133

• $75

Which expense was the largest for Tessa?

• Groceries

• Cell phone bill

• Rent

• Electric bill