Which of the following equations matches the function shown above? A. y=3sin(1/2x) B. y=2sin(1/2x)+1 C. y=2sin(2x)+1 D. y=3sin(2x)

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