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Nuetrik [128]
4 years ago
11

3. A cell phone company offers two texting plans. People who use plan A pay 10 cents

Mathematics
1 answer:
Sonbull [250]4 years ago
5 0

Answer:

  a. 0.10x < 12 + 0.02x

  b. x < 150

Step-by-step explanation:

a. For sending x texts, the cost of Plan A in dollars is ...

  0.10x

For sending x texts, the cost of Plan B in dollars is ...

  12 + 0.02x . . . . . . where 12 is the monthly charge regardless of texts sent

We want the Plan A charge to be less than the Plan B charge, so the inequality is ...

  0.10x < 12 + 0.02x

__

b. Subtract 0.02x:

  0.08x < 12

Divide by 0.08

  x < 12/0.08

  x < 150 . . . . . the solution to the inequality

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