<span>They are finite sums of expressions of the form where a is a constant, x is the variable and k is a non-negative integer</span>
        
             
        
        
        
Answer:3/4
Step-by-step explanation:60 minutes divided by 4 is 15. 3  15 minute increments is 45. 45 minutes is 3 /4 of an hour. 
 
        
             
        
        
        
The <u>correct answer</u> is:
As x→-∞, y→-3.
As x→∞, y→∞.
Explanation:
As our values of x get further into the negative numbers, the value of 2ˣ will approach 0.  This is because raising a number to a negative exponent "flips" the number below the denominator and raises it to a power; we end up with smaller and smaller fractions, eventually so small that they nearly equal 0.  
This will make the value of the function 0-3=-3.
As x gets larger and larger (towards ∞), the value of y, 2ˣ, continues to grow as well.  Since it continues to grow exponentially, we say the value approaches ∞.
        
                    
             
        
        
        
What is the question? i could help you if i knew the question