Each input should only have 1 output. Multiple inputs can have the same output, but one input can only correspond to a single output. 
Also, if you graph the relation with the input as the x coordinate and output as the y coordinate, you can then conduct a verical line test. Anywhere you draw a vertical line, you should only intersect the curve one time.
        
             
        
        
        
Observe that 85 is an odd number. That means, one of the prime numbers must be even to have an odd sum with another odd number. As we know, the only even prime number is 2. Hence, the other number is 83.
So, the product of these two prime numbers is 83 x 2 = 166.
Thus, the answer is 166<span>. </span>
        
             
        
        
        
Answer:
The answer for 24 is B, so its 7.50 
 
        
             
        
        
        
Answer:
10
Step-by-step explanation:
 =
 = = 10
  = 10
  
 
        
             
        
        
        
Answer:
measure of angle 3= 109
angle 2=71
angle 1=109
Step-by-step explanation:
a straight line =180