Answer: In attached 
Step-by-step explanation:
Use the given functions to set up and simplify 
Attachment has your answer. 
I’m not good at typing functions on this app so this image is all I could give.
 
        
                    
             
        
        
        
Answer:
Manual Override??
Step-by-step explanation: I'm prop wrong
 
        
                    
             
        
        
        
A histogram would best represent the data. 
Dot plot is a good way to show a certain trend. However, when it comes to the number of a item, in this case the number of students in a certain score range, a histogram will be the most intuitive and concise. Thus, a histogram best represent the data presented here.
        
             
        
        
        
Answer:
1 1/5 or 6/5 
Step-by-step explanation:
So you get 2/5 every 1/2 hour so take the amount you have and times it by 3.
 
        
             
        
        
        
Answer:
Option A. (-1, 0)
Step-by-step explanation:
In the figure attached,
Circle O is a unit circle (having radius r = 1 unit)
If a point A with central angles = θ, is lying on the circle then the coordinates of the point A will be,
x = r.cosθ 
x = 1.cosθ = cosθ
and y = r.sinθ 
y = 1.sinθ = sinθ
Therefore, coordinates representing the point A will be (cosθ, sinθ).
As per question the given point A is lying at P (a point having central angle θ = 180°)
Coordinates of point P will be 
(x', y') → (cos180°, sin180°)
         → (-1, 0)
Therefore, Option A will be the answer.