Kenny pointed a motion detector at a wall and then walked directly backward at a - HiSET Prep

Question

Kenny pointed a motion detector at a wall and then walked directly backward at a constant rate of speed while still pointing the detector at the wall. The data collected in the experiment are recorded in the table.

 

Kenny wrote the equation d = 3s + 10 to model his distance, d, in feet, from the wall s seconds after he started walking.

If Kenny continued walking backward at the same steady rate, how many seconds after he first started walking was he about 55 feet from the wall?

Answers
  1. correct
Explanation

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