Answer:
- Decreasing  
Step-by-step explanation:
im not sure of the last two but the others are for sure a no
 
        
             
        
        
        
CD and DE are equal distance so their equations are equal:
2x+7 = 4(x-3)
2x+7 = 4x-12
Subtract 2x from both sides
7 = 2x-12
Add 12 to both sides
19 = 2x
9.5 = x
Now that u have x just plug it into the equation for DE
4(9.5-3)
38-12
26 is the answer
        
             
        
        
        
Y = x^2 cos x
y'  = x^2 * -sin x +  cos x * 2x
   =  2x cos x - x^2 sin x
  = x ( 2 cos x - x sin x)
        
             
        
        
        
Answer:
5x2+6x-6=0
Step-by-step explanation:
Standard form is ax2+bx+c=0
We add 6x to both sides and we get:
5x2+6x-6=0
 
        
             
        
        
        
Earnest will have to use the 1/4 cup because the measurements are made by fourths and the 1/2 is equivalent to 1/4 because 3/4 + 1/4=1 whole