So the question ask to calculate and find the equation that could represent the graph that is shown in your problem. In getting the answer to this, you must use the formula of the slope intercept form and get the value of the slope. So the answer would be letter D. y=x+3.
        
             
        
        
        
If you have not already, convert the angle into a radius. xπ/180 where x is the angle in degrees. 
The formula for area is A=r²Ф/2 where r is radius and Ф is angle in radians. 
Solve to find the area. 
Hope I helped :) 
        
             
        
        
        
Alright, lets get started.
We could use sine law to find the remaining angle.


Plugging the value of sin 64


Cross multiplying
sin S = 0.8189
Taking inverse on both side

S = 55° : Answer
Hope it will help :)
 
        
                    
             
        
        
        
That is the combination of 10 over 3, which is calculated as the quotient of factorials:
n!/k!(n-k)!
where n = 10 and k = 3:
= 10!/3!(10 - 3)!
= 10!/3!*7!
= (10*9*8)/(3*2*1)
= 720/6
= 120
therefore there a re 120 possible different groups
        
                    
             
        
        
        
Bottom right one is the range