Question

A phone company offers two monthly charge plans. In Plan A, there is no monthly fee, but the customer pays 6 cents per minute of use. In Plan B, thecustomer pays a monthly fee of $5.70 and then an additional 3 cents per minute of use.For what amounts of monthly phone use will Plan A cost more than Plan B?Use m for the number of minutes of phone use in a month, and solve your inequality for m.

Answer 1

Step-by-step explanation

We can use the following inequality in order to get the amount of monthly phone use:

0.06m > 5.70+0.03m

Subtracting -0.03m to both sides:

0.06m - 0.03m > 5.70

Subtracting like terms:

0.03m > 5.70

Dividing both sides by 0.03:

m > 5.70/0.03

Simplifying:

m > 190

The amount of minutes is equal to 190 minutes.