Interpreting graphs

This graph shows the cost of long-distance phone call

Find the cost of a call that lasts 8 minutes

• $4.60

• $4.00

• $5.00

This graph shows the cost of long-distance phone call

A call costs $4. How long does the call last?

The graph shows how the charge on a battery of an electronic device decreases as the device is being use.

What is the initial charge?

The graph shows how the charge on a battery of an electronic device decreases as the device is being use.

if the charges continues to decrease at the same rate, when will the battery have no charge?

The graph shows how the charge on a battery of an electronic device decreases as the device is being used. After one hour the device uses ____ of the battery; after 2 hours the device has _____

Answer explanation

What is the initial temperature?

• 80 ºC

• 90 ºC

• 60 ºC

What is the temperature after 5 minutes?

• 80 ºC

• 85 ºC

• 70 ºC

How many degrees does the temperature change each minute?

• 10 ºC

• 4 ºC

• 7 ºC

How long will it take for the temperature to reach 60ºC ?

The graph shows the depth of water in a barrel

What is the initial depth

• 0.5

• 0.6

• 0.8