It looks like the differential equation is

Multiply both sides by 1/(<em>x</em> + 1) :

The left side is now a derivative of a product,

Integrate both sides with respect to <em>x</em> :

Solve for <em>y</em> :

Answer:
The second one.
Step-by-step explanation:
It is instructed to subtract (2a−3b+4c) from the sum of (a+3b−4c),(4a−b+9c) and (−2b+3c−a).
So, First we will do the sum of the three given polynomials,
Sum =(a+3b−4c)+(4a−b+9c)+(−2b+3c−a)
=(a+4a−a)+(3b−b−2b)+(−4c+9c+3c)
=4a+8c
Now, we can perform the subtraction,
∴ Required difference
=(4a+8c)−(2a−3b+4c)
=4a+8c−2a+3b−4c
=2a+3b+4c
The increase of the cost:
$56.00 - $48.00 = $8.00
The increase percentage:
(8÷48)*100=16.7%
The first thing to do was to find the area of the space to do that we would need to do:
220*200= 44000
the area is

next you would do:
44000/.4 to find how many people can fit
this equals
1100011,000 people can attend the concert