You can use any numbers for the Y you figure out you points. :)
 
        
        
        
Answer:
His money earned $36 after 3 months
Step-by-step explanation:
* Lets revise the rules of simple interest
- Simple Interest Equation (Principal + Interest)
  A = P(1 + rt)
- Where:
•	A = Total amount (principal + interest)  future amount
•	P = Principal Amount
•	I = Interest Amount
•	r = Rate of Interest per year in decimal; r = R/100
•	t = Time Period involved  
* To calculate the interest I use the formula
   I = P × r × t
* Lets solve the problem
- The rate is annual 
- The interest calculated after 3 months
∴ I = P × R/100 × t/12 
∵ P = $3600.00
∵ R = 4%
∵ t = 3 month
∴ I = 3600.00 × 4/100 × 3/12 = $36
* His money earned $36 after 3 months
 
        
             
        
        
        
Any terminating decimal number is rational.
A rational number is a number that can be written as a fraction of integers.
0.444 = 444/1000 = 222/500 = 111/250
0.444 is the same as 111/250, a fraction of integers, so 0.444 is rational.
        
             
        
        
        
The answer is 3 for this question.