Using Variables to Represent Real World Situations (Example)

Luca is selling T-shirts for a fundraiser, with $5 donated to charity for each shirt sold. The video explains how to calculate the total donation amount for different quantities of shirts sold, using multiplication. It also introduces the concept of representing this situation as a mathematical expression using a variable.

How much money is donated to charity if Luca sells 10 T-shirts?

• $100

• $50

• $20

• $10

If Luca sells 2 T-shirts, how much is donated to charity?

• $20

• $15

• $10

• $5

What is the constant amount donated per T-shirt sold?

• $5

• $3

• $2

• $4

How can the total donation be expressed if 'S' is the number of shirts sold?

• S/5

• S - 5

• 5S

• S + 5

What does the variable 'S' represent in the expression for total donation?

• Amount per shirt

• Number of shirts sold

• Charity name

• Total donation