Joshua must have 7 more customers if they each buy 2 items.
        
                    
             
        
        
        
Answer:
3 ,5 , and 2 
Step-by-step explanation:
Hope it helps :)
 
        
             
        
        
        
1) Let x be the original speed that he was driving; 
x mph ---> 1.5 hours 
x+44 mph --> 2.5 hours 
1.5x + 2.5(x+44)=206 
1.5x+2.5x+110=206 
4x=206-110 
4x=96 
x=24 
Therefore, he was travelling at 24 mph in the fog. 
2) Let x be the speed of 1 snail, 
The other snail travels at the speed of x+1 cm/min 
23x+23(x+1)=391 <-- solve for x 
23x+23x+23=391 
46x=368 
x=368/46 
x=8 
Therefore one of the snail travels at 8 cm/min while the other goes at 9 cm/min 
7) Let x be one crew 
Then the other crew would be working at x+0.5 
3.2x+3.2(x0.5)=8 <-- solve for x 
3.2x+1.6x=8 
4.8x=8 
x=8/4.8 
x=1.6666 or 1.7 miles 
Therefore, one of the crew does 1.7 miles per day and the other crew does (0.5*1.7)=0.85 miles
Hope I helped :) 
        
             
        
        
        
To find the value of f(3) we need to follow the below steps :
Step 1 : First plot the graph of f(x)
Step 2 : We need to find f(3) or the function value at x = 3 therefore, in the graph locate the point (3,0)
Step 3 : Draw a line parallel to Y-axis passing through the point (3,0) .
Step 4 : Now there exists two cases :
If the drawn line do not intersect the graph of f(x), then no value of f(3) exists for the given function of x
If the drawn line intersects the graph, then the intersection point is marked and a line parallel to x - axis is drawn passing through that marked or intersection point. And the line where it intersects the y - axis is our required value of f(3).
If this is wrong than I guess I wasn't smart enough :)
 
        
             
        
        
        
2500 * 0.9 = 2250
2250 * 0.9 = 2025 current stock