Question

A cell phone carrier offers two plans for text messaging. Plan A costs $20 per month plus $0.05 per text. Plan B costs $10 per month plus $0.10 per text. For how many text messages per month are the plans the same cost?

Answer 1

For the answer to the question above,Let C-cost
Let n- the number of text messages

c=20+0.05n
c=10+0.10n

When cost is same;
20+0.05n=10+0.10n
20-10=0.10n-0.05n
10=0.05n

10/.05

n=200
Cost is same when 200 messages are sent.

I hope my answer helped you

Answer 2

Answer:

c-200

Step-by-step explanation:

Plan A:   20 + (.05 x 200)

              20 +  10 =30

Plan B: 10 + (.10 x 200)

            10 + 20 = 30