You buy 3.8 pounds of trail mix. the mix costs $2.78 per pound. what is the total price for the trail mix?

2.78 * 3.8
10.56

Hope this helps!

Time 2.78 by 3.8 pounds =  $10.56

The question is only asking for the 4-5 hour students, not anyone else. If you look at the 4-5 section, which is yellow, you will see the bar fills up to 6. This means that there are 6 students spending 4-5 hours a week watching TV.
Your answer is C.)
I hope this helps!