Answer:
B)y = 3x^2 - 3x-18
Step-by-step explanation:
y = (3x – 9)(x + 2)
y = 3x*x+3x*2-9*x-9*2
y = 3x^2 +6x-9x-18
y = 3x^2 - 3x-18
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
3 + 5 +7 +9 + 11 + ....
n = 100
a = 3
d = 5 - 3 = 2

 
        
             
        
        
        
Answer:
f(-6)=10
Step-by-step explanation:
because it is listed in the coordinates.
 
        
             
        
        
        
Answer:
Number of workers = 20.
Step-by-step explanation:
p = - 4w^2 + 160 w
We need to find the value of w when p is a maximum. 
We need to convert the equation to vertex form:
p = -4w^2 + 160w
p = -4(x^2 - 40w)
p = -4 [ (x - 20)^2 - 400]
p =  -4(x - 20)^2 + 1600.
So the vertex is at  (20 , 1600)
The maximum profit is 1600 and the number of workers = 20.