Nigel is going from London, UK, to Moscow, Russia, by train. He goes 517 kilometers on a train from London to Paris, France. He takes another train 837 kilometers to Munich, Germany, and switches trains in Munich to ride 399 kilometers on a train to Vienna, Austria. His last train ride carries him 2,088 kilometers from Vienna to Moscow. Find his total distance by first rounding each distance to the nearest hundred kilometers before adding. Do not put units in your answer.

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

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