Y-intercept happens when x = 0
y-intercept represents if Mitch doesn't add the monthly savings, so the savings account will still remain in $175
        
             
        
        
        
The numerator should be 8x
        
             
        
        
        
Use arccos...cos^-1 so 
cos^-1 (0.8195)
it equals 34.96522689°
        
             
        
        
        
Answer:
I'm guessing C 
Step-by-step explanation:
I don't think this is the correct way to answer it. But I litterly rotated it in my brain and got 7.5....
 
        
             
        
        
        
I think it is F. Because im just guessing.