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# Calculating bounds of an expression

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1. I've been stuck on this question and don't understand how the answer is worked out:

Calculate lower bound of E. Calculate upper bound of E.

Question, for c is the LB & UB worked out for each number (3.0 and 10^8) or do you workout each number individual. e.g. LB is 2.95 & 9.5^8

My answer was incorrect by quite a bit. I would be grateful if someone can show how they get to the answer as i'm lost.
2. (Original post by Chrollo-Lucilfer)
I've been stuck on this question and don't understand how the answer is worked out:

Calculate lower bound of E. Calculate upper bound of E.

Question, for c is the LB & UB worked out for each number (3.0 and 10^8) or do you workout each number individual. e.g. LB is 2.95 & 9.5^8

My answer was incorrect by quite a bit. I would be grateful if someone can show how they get to the answer as i'm lost.
I recommend you write out the number in full and then think about what the LB and UB are:

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