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? 20 30 200 300

Explanation:

Step1: Set up cost equations

Let \(x\) be the number of text messages.
Cost of Plan A: \(C_A = 20+0.05x\)
Cost of Plan B: \(C_B = 10 + 0.10x\)

Step2: Set \(C_A=C_B\)

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Answer:

200