Heating problem and battery backup

Recently I bought a macbook pro (7 days). I am facing heating problem and its battery backup is also not good, 3-4 hrs, but company claims 7 hrs. What should I do?

For more on laptop temperature, look here:
http://support.apple.com/kb/HT1778
Take note of this part:
While there are third-party utilities that measure the temperature of a notebook computer, it is important to understand that these utilities are not measuring the external case temperature. The actual case temperature is much lower. Never use third-party applications to diagnose possible hardware issues—instead,contact Apple or go to an Apple Retail Store or Apple Authorized Service Provider.

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