These questions are written badly.

The first one is, I presume, to solve

,

This equation is separable:

Upon integrating

We know that s(1) = 3/2, so

Solve for C.

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For the second one I presume you are trying to integrate?

Let

Then your integral becomes

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For the third I presume this is

,

(Please use parenthesis!)

This is, again, a separable equation:

Integrate both sides by using the substitution u = x - 2.

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I presume the last one is an integration as well and is

(Again, please use parenthesis!)

Split this into two parts:

For the first integral let y = 3x and the second let u = -x.

-Dan