Jackson places the mirror on the ground so that he is able to look at the mirror and see the top of the mountain.
The mirror is 5 feet in front of him and is approximately 40 feet from the base of the mountain. Jackson is 6’4” tall. Approximately how high is the top of the mountain?

In this scenario, the height of the object is proportional to its distance from the mirror. The mountain is 40'/5' = 8 times as far from the mirror as Jackson, so it will be 8 times as tall as Jackson:

8 × 6'4" = 48'32" = 50'8"

The mountain is 50 feet 8 inches tall.

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Jackson places the mirror on the ground so that he is able to look at the mirror and see the top of the mountain. The mirror is 5 feet in front of him and is approximately 40 feet from the base of the mountain. Jackson is 6’4” tall. Approximately how high is the top of the mountain?

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Jackson places the mirror on the ground so that he is able to look at the mirror and see the top of the mountain.
The mirror is 5 feet in front of him and is approximately 40 feet from the base of the mountain. Jackson is 6’4” tall. Approximately how high is the top of the mountain?