Text Messaging Budget and Costs

The video tutorial covers writing and evaluating expressions using multiplication and addition. It presents a real-world problem involving phone charges, where a company charges a monthly fee and a per-text fee. The tutorial guides through calculating monthly charges for different numbers of text messages, recognizing patterns in the calculations, and solving a budget constraint problem to determine the maximum number of text messages that can be sent within a budget.

What mathematical operations are focused on in this lesson?

• Multiplication and addition

• Division and multiplication

• Subtraction and division

• Addition and subtraction

What is the monthly service fee charged by the cell phone company?

• $10

• $5

• $15

• $20

How much does the company charge per text message?

• 10 cents

• 20 cents

• 15 cents

• 5 cents

What is the total monthly charge if no text messages are sent?

• $10

• $0

• $5

• $15

How much is the total charge for sending 10 text messages?

• $9

• $8

• $7

• $6

What is the total charge for sending 20 text messages?

• $8

• $7

• $6

• $5

How much is the total charge for sending 30 text messages?

• $7

• $8

• $10

• $9

What is the formula to calculate the total monthly charge based on text messages sent?

• T + 5 * 0.10

• 0.10 + 5 * T

• 5 * T + 0.10

• 5 + 0.10 * T

What remains constant in the charge calculation formula?

• The 10 cents per text

• The total charge

• The number of text messages

• The $5 monthly fee

If Susanna has a $10 budget, how much can she spend on text messages?

• $5

• $10

• $20

• $15