Answer: 
This is the same as writing 7*Ln( e^(2x) + 10) + C
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Explanation:
Start with the equation 
Apply the derivative and multiply both sides by 7 like so

The "multiply both sides by 7" operation was done to turn the 2e^(2x) into 14e^(2x)
This way we can do the following substitutions:

Integrating leads to

Be sure to replace 'u' with e^(2x)+10 since it's likely your teacher wants a function in terms of x. Also, do not forget to have the plus C at the end. This is a common mistake many students forget to do.
To verify the answer, you can apply the derivative to it and you should get back to the original integrand of 
350000 = 270000(1.05)^n
1.05)^n = 350000/270000 = 1.296296
n = log 1.296296 / log 1.05 = 5.3 years answer
Answer:
The third one
y+1=-2(x-3)
Step-by-step explanation:
Solve y+1=-2(x-3)
y+1=-2(x-3) becomes y=-2x+5
Then just graph it.
Answer:
the value of (2/3*0)-3 is -3
Step-by-step explanation:
X - 3, where x represent the floor you are on currently.
Hope this helps!