The period of a sinusoid 

 is 

, so any range such that 

 will give two complete periods.
 
        
        
        
Its c I've done this before
        
                    
             
        
        
        
Answer:
The approximate solution to the system is (1.2, 4.4)
x = 1.2 and y = 4.4
Step-by-step explanation:
The solution of the system of linear equations equation y = –0.25x + 4.7 and y = 4.9x – 1.64 is shown in the attached graph. The red line represents the equation y = –0.25x + 4.7 and the blue line represents the equation  = 4.9x – 1.64. 
The solution of the system of equations is their point of intersection shown on the graph. 
The point of intersection is (1.231, 4.392). To the nearest tenth, it is (1.2, 4,4). So x = 1.2 and y = 4.4. 
So the approximate solution to the system is (1.2, 4.4)
 
        
                    
             
        
        
        
Answer:
A.1/3
Step-by-step explanation:
  1  Pick two points on the line and determine their coordinates.
    2 Determine the difference in y-coordinates of these two points (rise).
    3 Determine the difference in x-coordinates for these two points (run).
  4 Divide the difference in y-coordinates by the difference in x-coordinates (rise/run or slope).