Question

Question

Suppose an average person blinks 15 times per hour. How many times does an average person blink in a year? Write the answer in scientific notation (Hint: 1 year = 365 days, 1 day = 24 hours).(1 point)
Responses:

1.314 × 10^−5

1.314 × 10^4

1.314 × 10^5

1.314 × 10^−4

Answer 1

To calculate how many times an average person blinks in a year, we can follow these steps:

1. Determine the number of hours in a year: \[ 1 \text{ year} = 365 \text{ days} \times 24 \text{ hours/day} = 8760 \text{ hours} \]

2. Calculate the total number of blinks in a year: \[ \text{Total blinks} = 15 \text{ blinks/hour} \times 8760 \text{ hours/year} = 131400 \text{ blinks/year} \]

3. Express this number in scientific notation: \[ 131400 = 1.314 \times 10^5 \]

Therefore, the average person blinks approximately 1.314 × 10^5 times in a year.

The correct response is: 1.314 × 10^5