Answer:
The correct answer is C. 4.7%
Correct statement and question:
A marine biologist is setting up a net 6 feet below the surface of the water. Each foot of the water screens out 40% of the light coming from the surface. Which of the following is the approximate percentage of light remaining after passing through 6 feet of water, to the nearest tenth of a percent?
0.4%
1.0%
4.7%
7.8%
Source: https://brainly.com/question/4136163
Step-by-step explanation:
1. Let's review all the information given to us to answer the question correctly:
Depth of the net = 6 feet below the surface of the water
Each foot of the water screens out 40% of the light coming from the surface.
2. Which is the approximate percentage of light remaining after passing through 6 feet of water, to the nearest tenth of a percent?
After one feet: 100 - 40 = 60%
After two feet = 60 - 0.4 * 60 = 60 - 24 = 36
After three feet = 36 - 0.4 * 36 = 36 - 14.4 = 21.6
After four feet = 21.6 - 0.4 * 21.6 = 21.6 - 8.64 = 12.96
After five feet = 12.96 - 0.4 * 12.96 = 12.96 - 5.18 = 7.78
After six feet = 7.78 - 0.4 * 7.78 = 7.78 - 3.11 = 4.67 = 4.7 (Rounding to the nearest tenth)
The correct answer is C. 4.7%
