200 minutes
120
1 hour and 25 minutes = 85 minutes = 20 minutes @ 22 a minute + 20 minutes @ 15 a minute + 45 minutes @ 03 a minute = 440 + 300 + 135 = 875
C(x) = $13.75+$0.2(x) C(225) = $13.75+$0.2(225) C(225) = $58.75
Assuming that the .7 should have been .07 then 100 minutes, otherwise never.
$5.40 divided by 45 minutes = $0.12 per minute.
Every VoIP provider that offers an app typically will have charges, but not necessarily monthly. There are those with monthly fees, but there are those that allow you to buy block minute rates too. It all depends on the company.
There are two different plans you can chose from. 1 is standard international calling plan which charges as low as $.20 a minute does not have a monthly access charge. The 2nd plan is an international long distance value plan which charges a monthly fee of 3.99 but has a rate as low as $0.06 cents per minute
At 0 minutes, turn both the hourglasses.After 4 minutes:The 4 minute hourglass: 0 minutes left.The 7 minute hourglass: 3 minutes left.Turn the 4 minute hourglass.After 7 minutes:The 4 minute hourglass: 1 minute left.The 7 minute hourglass: 0 minutes left.Turn the 7 minute hourglass.After 8 minutes:The 4 minute hourglass: 0 minutes left.The 7 minute hourglass: 1 minute left.Turn the 7 minute hourglass.After 9 minutes:The 4 minute hourglass: 0 minute left.The 7 minute hourglass: 0 minutes left.Now you know you are finished.
4 whole minutes and 4/5 of another one.
The slope is the rate of change, and the y-intercept could be viewed as the starting point. One example could be a phone plan that charges a minimum rate plus a per-minute rate. The money-per-minute would be represented by the slope, and the monthly minimum is the y intercept (the money you pay when minutes = 0).
1560/24 = 65 minutes
8.75
You will lose consciousness in about a minute but your body will still be alive for another two minutes or so