Multiple choice

A train is moving at a constant speed on a straight railway track. The equation d = 42t gives the distance d, in feet, of the train from a pole t seconds after the train crosses the pole. How many feet from the pole will the train be 5 seconds after crossing the pole?

  1. 42

  2. 47

  3. 210

  4. 420
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The equation is d = 42t. For t = 5, d = 42 * 5 = 210.

AI explanation

The given equation d = 42t provides the direct relationship between the distance in feet and the time in seconds. Substitute t = 5 into the equation to find the distance from the pole. This yields d = 42 * 5, resulting in 210 feet.

Keep practicing — related questions