Question

The function below can be used to calculate the cost of making a long distance call, ƒ(m), which is based on a $2.50 initial charge and a fee of $0.12 per minute, m, that the call lasts. ƒ(m) = 2.5 + 0.12m

Answer 1

Your question is incomplete, here is the complete question:

The function below can be used to calculate the cost of making a long distance call, f(m), which is based on a $2.50 initial charge and a fee of $0.12 per minute, m, that the call lasts, f(m) = 2.5 + 0.12 m. If Natalie paid $6.82 for one call, how many minutes long was it

It was 36 minutes long

Step-by-step explanation:

∵ The function is f(m) = 2.5 + 0.12 m, where f(m) is the cost of a

   distance call for m minutes

∵ Natalie paid $6.82 for one call

- Substitute f(m) by 6.82 in the equation above

∴ 6.82 = 2.5 + 0.12 m

- Subtract 2.5 from both sides

∴ 4.32 = 0.12 m

- Divide both sides by 0.12

∴ 36 = m

∴ The length of the call = 36 minutes

It was 36 minutes long

Learn more:

You can learn more about the function in brainly.com/question/10541435

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