Answer:
91
Step-by-step explanation:
In this question, the important information we get from this is that the stage can support 12,750 students. We are asked, if the average weight of a student is 140 pounds, what is the maximum number of students that can be on the stage safely?
To solve, we simply divide 12,750 by 140.
We get 91.07 as our answer. Since we are considering the maximum number of students, then we must round 91.07 to the nearest whole number which would be 91.
The maximum number of students who could safely be on the stage is 91.
For this case we have the following equation:
To find the time when it reaches its maximum height, we must derive the equation.
We have then:
Then, equaling to zero and clearing the time we have:
Answer:
the ball reaches its maximum height at:
C. 2