Understanding Linear Equations in Cellular Plans

The video tutorial explains how to derive a linear equation to calculate the total monthly cost of a Cingular cellular plan, which includes a flat fee and a per-minute charge. It uses two data points to find the slope and determine the flat fee, then applies the equation to calculate the cost for 1,200 minutes.

What is the cost for using 360 minutes in the cellular plan?

• $20.00

• $80.00

• $60.00

• $38.00

How is the problem represented to find the linear equation?

• Using a pie chart

• Using ordered pairs

• Using a histogram

• Using a bar graph

Tags

CCSS.8.EE.B.5

What is the slope of the linear equation in this context?

• 0.05

• 0.10

• 0.15

• 0.20

Tags

CCSS.HSF.LE.B.5

What does the slope represent in the cellular plan?

• The cost per minute

• The number of minutes used

• The flat monthly fee

• The total monthly cost

Tags

CCSS.HSF.IF.A.2

Which ordered pair is used to find the flat monthly fee?

• (360, 38)

• (800, 60)

• (1,200, 80)

• (500, 50)

Tags

CCSS.HSF.LE.B.5

What is the flat monthly fee in the linear equation?

• $60.00

• $40.00

• $20.00

• $80.00

Tags

CCSS.8.EE.C.8C

What is the final linear equation for the cellular plan?

• Y = 0.20X + 50

• Y = 0.15X + 40

• Y = 0.10X + 30

• Y = 0.05X + 20

How many minutes are used to calculate the total monthly cost in the final example?

• 1,000

• 360

• 1,200

• 800

What is the total monthly cost if a customer uses 1,200 minutes?

• $100.00

• $80.00

• $120.00

• $60.00

Tags

CCSS.HSF.LE.B.5

What does the variable 'X' represent in the linear equation?

• The flat monthly fee

• The total monthly cost

• The number of minutes used

• The cost per minute

Tags

CCSS.HSF.LE.B.5