Answer:
It should be -64
Step-by-step explanation:
 
        
             
        
        
        
Work done on cart
:
W
=
6000
J
Kinetic energy of cart
:
E
K
=
6000
J
Explanation:
Work done 
W
 is defined as the product of force 
F
 and distance 
s
:
⇒
W
=
F
⋅
s
Let's substitute the values of 
F
 and 
s
 into the equation:
⇒
W
=
300
N
⋅
20
m
⇒
W
=
300
kg
⋅
m s
−
2
⋅
20
m
⇒
W
=
300
⋅
20
kg
⋅
m
2
s
−
2
⇒
W
=
6000
kg
⋅
m
2
s
−
2
∴
W
=
6000
J
The gain in kinetic energy 
E
K
 is the same amount as the work done moving the cart:
∴
E
K
=
6000
        
             
        
        
        
First I'd expand the brackets so that you can re-simplify the values, so:
(2x + 3)(3x + 4)
6x^2 + 9x + 8x + 12
6x^2 + 17x + 12
The answer A. 2x(3x + 4) + 3(3x + 4) can be simplified the same way, with 6x^2 + 8x + 9x + 12, and so the answer is A. I hope this helps!
        
                    
             
        
        
        
Hi the answer to this is 
 A - Vertical Asymptote