media services charges $20 for a phone and $30/month for its economy plan. what is the total cost for 10 months service

You're paying way too much if the total cost is $500 for ten months. You only pay once for the phone.

C = (30 * 10) + 20

C = ?

C=300+20

C= $320 total cost

or did i miss the boat again?

You have it right this time! :-)

320! i thinkk

To calculate the total cost for 10 months of service, we need to multiply the monthly cost by the number of months and add any one-time charges.

In this case, the monthly cost is $30 and the one-time charge is $20 for the phone. Since we're considering 10 months of service, we multiply the monthly cost by 10:

10 months * $30/month = $300

Now, we add the one-time charge of $20:

$300 + $20 = $320

Therefore, the total cost for 10 months of service is $320, not $500.