Valdez Collins
09/13/2023 · Primary School

A pre-paid cell phone company charges \( \$ 10.05 \) as a monthly access fee and \( \$ 0.11 \) per minute of calling time. Express the monthly cost \( C \) in terms of minutes of call time. What will the monthly cost be if you make 354 minutes of calls this month? \( \$ \) \( > \) Next Question

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To express the monthly cost \( C \) in terms of minutes of call time \( m \), we can use the following formula: \[ C = 10.05 + 0.11m \] where: - \( 10.05 \) is the monthly access fee, - \( 0.11 \) is the cost per minute, - \( m \) is the number of minutes used. Now, to find the monthly cost if you make 354 minutes of calls, we can substitute \( m = 354 \) into the formula: \[ C = 10.05 + 0.11 \times 354 \] Calculating \( 0.11 \times 354 \): \[ 0.11 \times 354 = 38.94 \] Now, substituting this back into the cost equation: \[ C = 10.05 + 38.94 = 48.99 \] Thus, the monthly cost if you make 354 minutes of calls is: \[ \boxed{48.99} \]

Quick Answer

Monthly cost \( C = 10.05 + 0.11m \) Cost for 354 minutes: \( \$48.99 \)
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