Answer:
Whole numbers 
Step-by-step explanation:
Its not integers, Irrational numbers, or natural numbers. I can tell you what each one means to prove it.
 
        
             
        
        
        
Since x=-10, plug that into the equation.
f(x) = 2(-10) + 11
= -20 + 11
y = -9
So the ordered pair in (x,y) terms is (-10,-9).
        
             
        
        
        
The ordered pairs already plotted have x-coordinates: -3, -2, 1, and 2.
A function cannot have two ordered pairs with the same x-coordinate.
The answer cannot have -3, -2, 1, or 2 as the x-coordinate.
Answer: First choice (-1, 2)
 
        
                    
             
        
        
        
Answer:
The per hour rate is 0.5 inches per hour 
Step-by-step explanation:
Here, we want to calculate the rate at which the level of the water increased 
Mathematically, we can get this by dividing the amount of increment by the time it took 
That would be 3 inches divided by 6 hours 
= 3/6 = 0.5 inches per hour