Question

The expression 35 + 45x represents a train's distance, in miles, from a terminal after x hours of travel. How far was the train from the terminal at the beginning of its journey? Enter your answer in the box.

Answer 1

At the beginning of the journey, it was 35 miles from the terminal. This can be found, by looking for the constant (35 in this case), which shows that it will never be changed.

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