To calculate how many hours a tiger sleeps in 7 weeks, we first need to determine the total hours in 7 weeks.
There are 7 days in a week, so:
\[ 7 \text{ weeks} \times 7 \text{ days/week} = 49 \text{ days} \]
Next, we need to convert days to hours:
\[ 49 \text{ days} \times 24 \text{ hours/day} = 1176 \text{ hours} \]
Now, we can find out how many hours a tiger sleeps in that timeframe. A tiger sleeps between 18 to 20 hours a day, so we will calculate both the minimum and maximum sleep over the 49 days.
For the minimum:
\[ 18 \text{ hours/day} \times 49 \text{ days} = 882 \text{ hours} \]
For the maximum:
\[ 20 \text{ hours/day} \times 49 \text{ days} = 980 \text{ hours} \]
Therefore, a tiger will sleep between 882 to 980 hours in 7 weeks.
The correct answer is c) 882 to 980 hours.