Total Cost in a day is
. Profit function is
. And the revenue function is
. In a day, bookstore must sell at least 15 books, because of 6n-90=0, in order to make profit.
Answer:
9. 
fraction.
10. 
fraction.
Step-by-step explanation:
In the given table, we get, Andrea hiked 
of the total trail, Jon hiked 
of the total trail and Callie hiked 
of the total trail.
9. Therefore, Jon hiked 
fraction than Andrea hiked.
10. Therefore, Callie hiked 
fraction than Jon hiked. (Answer)
Hannah will earn $240 in 20 hours
Explanation: Since it tells you she earns $48 in 4 hours, you have to find how much she earns in 1 hour. So you do 48 divided by 4 (12) and that is how much she earns in 1 hour. Since the question is, how much does she earn in 20 hours, you multiply 12 x 20 and that equals 240 which means she earns $240 in 20 hours
(20*30)/2 = 300
300 km is the area of the triangle
Answer:
.05
Step-by-step explanation:
