Step-by-step explanation:

y2 = y , x2 = 5
y1 = 2 , x1 = 3

-4 = y-2 ==> y = -2
Ebony kept her bank account open for only 3 weeks, and the graph shows the entire 3 weeks. During that time,her greatest balance was $400
First we are going to find the common denominator of both fractions. To do that, we are going to multiply their denominators:

Now we can rewrite our expression using the common denominator:

Finally, we can use the trig identities:

and

to simplify our trig expression:
We can conclude that the correct answer is the fourth one.