A boy throws a baseball across a field. The ball reaches its maximum height, 18 meters, after 1 second. After approximately 2.3 seconds, the ball lands on the ground. The ball’s motion can be modeled using the function f(x) = –10x2 + 20x + 8. What is the height of the ball 1.5 seconds after it is thrown?

We can set this up as an equation
We know that there are 15% (0.15) of the total number of students (X) is 45
So, if we multiply X by 0.15, we get 45

X(0.15)=45

In order to get X alone, we can divide both sides by 0.15

X=300

So, there are 300 total students