Question

PLEASE ANSWER CORRECTLY, THOROUGHLY AS WELL AS CLEARLY, AND STEP BY STEP!!!!!

Face-to-face video (FFV) on mobile phones is currently accessible over WiFi or an internet connection. Cell-Tell is exploring 2 possible network plans which will allow a mobile phone user to use FFV over a 3G or higher network when a user is not connected to WiFI or the internet. Data pack A would cost the user 5 cents per minute. Data pack B would cost the user an initial set-up fee of $70 with an additional charge of 1.5 cents per minute.

1. Brandon plans to use 500 minutes of FFV over the next month over the 3G network. How much will each plan cost him?

2. At what point will the 2 data packs become equal in cost?

3. What factors should a person consider when choosing data pack B plan instead of data pack A?

Answer 1

Before answering all the sub-divided questions, lets make an equation first for each data packs.

(assume X = cost in dollars, t = number of minutes)

• Data pack A

• X = 0.05
  
• Data pack B

• X = 70 + 0.015 t

I hope this makes sense.

1.

Now, we just plug in the data in the equations we just made.

1. Data pack A : X = 0.05 * 500 = 25($)
2. Data pack B : X = 70 + 0.015 * 500 = 77.5($)

2.

Set both equations as equal.

0.05 t = 70 + 0.015 t

70 = 0.035 t.

t = 2000

When a user uses 2000 minutes of service, both Data pack A and B will have the same cost.

3.

Evaluate

A person should consider whether if they would use more or less than 2000 minutes of service.

• If a person uses less than 2000 minutes of service, they should use Data pack A.
  
• If a person uses more than 2000 minutes of service, they should use Data pack B.

So if a person is going to use Data pack B, the person must use more than 2000 minutes of service.