The initial amount was 200 dollars.
If you sub in 0, you get the amount at 0 months. 
Rate of change is the slope. You are losing -75 a month, which is the rate of change.
        
             
        
        
        
<u>Answer:</u>
Value of cosθ is ±√7/3 .
<u>Step-by-step explanation:</u>
According to the Question , value of :

And , we know the identity of sine and cosine as ,
 
<u>Using</u><u> </u><u>,</u><u> </u><u>this</u><u> </u><u>ident</u><u>ity</u><u> </u><u>we</u><u> </u><u>have</u><u> </u><u>;</u><u> </u>

Now , here since θ is in 2nd quadrant and in 2nd quadrant cos is negative . Hence ,the value of cos will be : 
 
 
        
             
        
        
        
12 it's adds ×÷2 ( 8÷2=4) and then add the two numbers (8&4)
        
             
        
        
        
16% of $36.48 is $5.84
 9s

Cross multiply 16 and 36.48 to 583.68, and then I divided by 100, to get the percent of 5.8368, which I rounded up to 5.84%.