Suppose an average person blinks 15 times/hr. How many times does an average person blink in a year? Choose the answer correctly written in scientific notation from below. (Hint: 1 year = 365 days. 1 day = 24 hours.)

1.314 · 10⁻⁵
1.314 · 10⁻⁴
1.314 · 10⁴
1.314 · 10⁵

1 answer

To find the number of times an average person blinks in a year, we need to multiply the number of times they blink in an hour by the number of hours in a day, and then multiply that by the number of days in a year.

Given that an average person blinks 15 times/hr, the calculation would be:
15 times/hr * 24 hrs/day * 365 days/year = 131,400 times/year

Written in scientific notation, this would be 1.314 x 10⁵ times/year.

Therefore, the correct answer is 1.314 · 10⁵.