Answer:

Step-by-step explanation:
3 is correct answer
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Answer:
The answer is in the link
Step-by-step explanation:
I hope it helps
Answer:
(a) 
(b) Here the intercept means that we pay
more than
for each text message received
(c) 145 text messages sent and 30 messages received
75 text messages sent and 50 messages received
180 text messages sent and 20 messages received
Step-by-step explanation:
Here we have
X×0.02 + Y×0.07 = 5
Therefore the equation is

b. Here the intercept means that we pay
more than
for each text message received
c. Other combinations are
145 text messages sent and 30 messages received
75 text messages sent and 50 messages received
180 text messages sent and 20 messages received.
Answer:
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