a long distance call costs .50 for the first minute, and then .9 for each additional minute. If the call lasted 10 minutes, how much did the call cost in cents? Thanks

I hope you meant $.09 per extra minute. Seems kinda harsh to make the 1st minute cheaper.

50+9*(10-1) = ?

At any rate, you apparently have trouble with decimal numbers.

To calculate the cost of the call, we need to find the cost for the first minute and then add the cost for the additional minutes.

First, let's find the cost for the first minute. We are given that the first minute costs $0.50, which is equivalent to 50 cents.

Next, let's calculate the cost for the additional minutes. Since the call lasted for a total of 10 minutes and we already accounted for the first minute, we need to determine the cost for the remaining 9 minutes.

The cost for each additional minute is $0.90, which is equivalent to 90 cents. Multiply this cost by the number of additional minutes (9) to find the total cost for the additional minutes.

Cost for additional minutes = $0.90/min * 9 min = $8.10 = 810 cents.

Now, all we need to do is add the cost for the first minute to the cost for the additional minutes:

Total cost of the call = cost for first minute + cost for additional minutes
= 50 cents + 810 cents
= 860 cents.

Therefore, the call would cost 860 cents in total.