Question

A cell phone company charges $0.05 for the first 25 text messages sent. For more than 25 text messages sent, the company

charges $0.10 for each text sent. If over 800 messages are sent, the company still charges $0.10 per text and an additional penalty
of €75 Which modele the cost of any number of text messages sent?

Answer 1

Number of Text Messages Sent (��)

Total Monthly Bill in Dollars

0

$0.00

10

$5.00

20

$10.00

30

$20.00

��

Tx$5.00

Explanation:

Answer 2

Answer: you send:

30 text messages

25 pictures

Step-by-step explanation: The first thing we must do for this case is to define variables:

x: text messages

Y: pictures

We write the system of equations:

0.05x + 0.10y = 4

x = y + 5

Solving the system we have:

x = 30

y = 25