Question

You visit the Grand Canyon and drop a penny off the edge of a cliff. The distance the penny will fall is 16 feet the first second, 48 feet the next second, 80 feet the third second, and so on in an arithmetic sequence. How far from the cliff will the penny be at 6 seconds after it is initially dropped?

Question 5 options:

A) 128

B)150

C) 176

Answer 1

C

Explanation:

You dont even have to do the math, but each second is a 32 distance increase. Just count in your head to 6.

And notice how the third one is 80 so double that to 6 is 160, but plus the first second (16) since we are not starting from 0. which ends up to be 176