Answer:
Graphic is showed in the figure below
Step-by-step explanation:
To graph the equations given, let's do a table for positive values of x, and, by replacing it in the equation, let's calculate the value of y. Knowing the coordinate points (x,y) we can build the graphic. 
<em>x        y= x + 1/x²       y = 1/x</em>
1             2                    1
2          2.25               0.2
3          3.11                 0.33
4          4.06               0.25
When x->0 both equations -> ∞, because lim(1/x) x->0 = ∞
The graphic is showed below. In red there is y = 1 + 1/x² and in blue y = 1/x
 
        
             
        
        
        
Answer:
320 cups of soup
Step-by-step explanation:
2/5= x/800
2/5 =.04  
800*.04 =320       x=320
2/5 = 320/800
2/5 =0.4  is equivalent to 320/800=0.4
 
        
             
        
        
        
False, the x intercept is always shown as (#,0). So technically the x value would be any #. The ordered pair for a x intercept has a y value of 0.
        
                    
             
        
        
        
Answer:
12558
Step-by-step explanation:
times all of them
 
        
             
        
        
        
Yay, derivitives
I'mma ignore that x is the shorter side because I don't know which one has to be shorter yet
we need to find the max area
but with 3 sides
area=LW
let's say the sides are z and y
zy=area
and the relatiionship between them is
hmm, 
z+2y=1200
because one side has no fencing
so
z+2y=1200
solve for z
z=1200-2y
sub for z in other
(1200-2y)(y)=area
expand
1200y-2y²=area
take derivitive
1200-4y=dy/dx area
max is where dy/dx goes from positive to negative
solve for where dy/dx=0
1200-4y=0
1200=4y
300=y
at y<300, dy/dx<0
at y>300, dy/dx>0
so at y=300, that is the max
then
z=1200-2y
z=1200-2(300)
z=1200-600
z=600
so then
z=600
y=300
300<600
so the shorter side would be y
so then we see our choices and noticed that
erm
I think it is f(x)=1200x-2x²
takind the derivitive yeilds none of the others
so ya, you are right