Question

A certain cellular phone plan charges $30.00 per month plus $0.14 for each minute of usage. The monthly charge is given by the formula monthly charge = 0.14x + 30, where x represents the number of minutes of usage per month. What is the charge for a month with 330 minutes of usage? Write your answer to two decimal places as money is traditionally written

Answer 1

Step-by-step explanation:

We have to replace x = 330 into the equation:

`\begin{gathered} \text{monthly charge}=0.14x+30 \\ \text{monthly charge}=0.14\cdot330+30=46.2+30=76.2 \end{gathered}`

Answer:

The monthly charge with 330 minutes of usage is $76.20