Acommunity chorus has 15 women and 12 men. what fraction of the chorus is made up of women?
a. 1/5
b. 4/9
c. 5/9
d. 4/5

5/9

Step-by-step explanation:

Number of women= 15

Number of men= 12

Total number of people= 15+12 = 27

Fraction made up of women= Number of women divided by total number of chorus

= 15/27

We reduce 15/27 to it's simplest form = 5/9

The fraction of the chorus made up of women is 5/9

So, the function is obviously shifted up by 1 so it rules out A and B, and we also see that the period is 4pi rather than 2pi, and using the fact that:

Now that we know our b value, we see that the correct answer would be C.