Question

1. you are playing a history quiz game where you must give the years of historical events. in order to score any points at all for a question about the year in which a man first stepped on the moon, your answer must be no more than 3 years away from the correct answer, 1969. what is the range of answers that allow you to score points?

the speed limit on a road is 30 miles per hour. drivers on this road typically vary their speed around the limit by as much as 5 miles per hour. what is the range of typical speeds on this road?

Explanation:

Step1: Find lower bound of range

$1969 - 3 = 1966$

Step2: Find upper bound of range

$1969 + 3 = 1972$

(for the speed question):

Step1: Calculate minimum typical speed

$30 - 5 = 25$

Step2: Calculate maximum typical speed

$30 + 5 = 35$

Answer:

The range of valid answers is 1966 to 1972, inclusive.

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