rate ratio slope equation graphing

1. Start up: How much does an iPhone end
up costing me over 2 years?
iPhone
“You need to lock that $600 phone in your locker,” said Mr.
Roberts.
“It was only $200, Mr. Roberts, Jeez!” said the student as he
shoved it in his locker.

2. R71 R7
. .2
I Can...
Show Unit Rate and equivalent
ratios for the cost of an iPhone.
Graph the cost of an iPhone over
time: RATE
Show how much money I would
save if I bought an iPod Touch and
a basic phone.

3. You can buy an iphone for $200.
But this is “On Contract”. This
means you agree to subscribe for
24 Months!
You can buy a

4. If you didn’t want it for
t wo years, It costs
$650
Actual Cost!

5. You will have to pay for
Minutes every month.

6. And a Data Plan !

7. This is the same for AT&T

8. Data
Would you like txt
messaging as well?

9. You will have to pay for
Minutes every month.

10. Graded
What is the Unit Rate for each plan?
Unlimited isn’t really unlimited:
What is the maximum number of minutes you
could talk on the phone in a month?

11. Graded
Unit Rate?
16 GB 32GB 64GB
Verizon 199.99 299.99 399.99
AT&T 199.99 299.99 399.99
What is the unit rate?

12. Unit Rate?
Data Per 200mb 2GB 5GB 10GB
month (1/5 of GB)
Verizon $30 $50 $80
AT&T $15 $25 $45
What is the unit rate?

13. Graded
What is the Unit Rate for each plan?
Unlimited isn’t really unlimited:
What is the maximum number of minutes you
could talk on the phone in a month?

14. Equivalent Ratios
Minutes
450 900 unlimited
per Month
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99
At what point is Unlimited a better deal
for you? How many minutes a month?
Day?

15. Equivalent Ratios
Minutes
450 900 unlimited
per Month
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99
At what point is Unlimited a better deal
for you? How many minutes a month?
Day?
$80 = $90
900min ??min

16. Equivalent Ratios
Minutes
450 900 unlimited
per Month
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99
At what point is Unlimited a better deal
for you? How many minutes a month?
Day?
Graded: At what minute level is AT&T a
better rate than $60 for 900minutes?

17. Together Minutes
450 900 unlimited
per Month
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99
Graph each cost per month for both
AT&T and Verizon
What is the unit Rate per month?
Cost per month?

18. Start up: set up this
graph
Minutes
per Month 450 900 unlimited
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99

19. Graph the rest. Be as
accurate as possible!
Minutes
per Month 450 900 unlimited
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99

20. Minutes
per Month 450 900 unlimited
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99

21. Minutes
per Month 450 900 unlimited
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99

22. Minutes
per Month 450 900 unlimited
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99

23. Minutes
per Month 450 900 unlimited
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99

24. Graded Data Per 200mb 2GB 5GB 10GB
month (1/5 of GB)
Verizon $30 $50 $80
AT&T $15 $25 $45
Graph each cost per month for both
AT&T and Verizon

25. How much does the phone
16 GB 32GB 64GB cost over t wo years?
Verizon 199.99 299.99 399.99
AT&T 199.99 299.99 399.99
Minutes
450 900 unlimited
per Month
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99
Data Per 200mb 2GB 5GB 10GB
month (1/5 of GB)
Verizon $30 $50 $80
AT&T $15 $25 $45
Pictures taken from verizonwireless.com and ATT.com on 11-21-11

26. 16 GB 32GB 64GB What is the cheapest
Verizon 199.99 299.99 399.99 cost over t wo years?
AT&T 199.99 299.99 399.99 The most expensive?
Minutes
450 900 unlimited
per Month
Verizon 59.99 79.99 89.99
ATT 39.99 59.99 69.99
Data Per 200mb 2GB 5GB 10GB
month (1/5 of GB)
Verizon $30 $50 $80
AT&T $15 $25 $45
Pictures taken from verizonwireless.com and ATT.com on 11-21-11

27. Cost of basic phone and
iPod touch
Basic phone AT&T and Verizon:
Free with 2 yr. contract. 39.99 Month for voice
only. $39.99x12 months= $479.88
iPod Touch
Pictures taken from apple.com on 11-21-11

28. Why is there no 16GB
touch?
iPod Touch
16 GB 32GB 64GB
iPhone
Verizon 199.99 299.99 399.99
AT&T 199.99 299.99 399.99