Final answer:
Kareem was billed for 107 minutes.
Step-by-step explanation:
To find the number of minutes Kareem was billed, we need to subtract the fixed monthly fee of $5 from his total bill of $14.63. This will give us the cost of the minutes he used.
$14.63 - $5 = $9.63
Now, we can divide the remaining cost by the cost per minute to find the number of minutes Kareem was billed.
$9.63 ÷ $0.09 = 107
Therefore, Kareem was billed for 107 minutes.