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)

Question

Responses

1.314 × 10−5
1.314 times 10 superscript negative 5 baseline

1.314 × 105
1.314 times 10 superscript 5 baseline

1.314 × 10−4
1.314 times 10 superscript negative 4 baseline

1.314 × 104
1.314 times 10 superscript 4 baseline

Answer 1

To find out how many times an average person blinks in a year, we'll start with the known values and perform the calculations step-by-step.

1. Blinks per hour: 15
2. Hours per day: 24
3. Days per year: 365

Now, we can calculate the total blinks in a year:

\[ \text{Total blinks in a year} = \text{Blinks per hour} \times \text{Hours per day} \times \text{Days per year} \]

Substituting the values:

\[ \text{Total blinks in a year} = 15 , \text{blinks/hour} \times 24 , \text{hours/day} \times 365 , \text{days/year} \]

Now, calculating this step-by-step:

1. Calculate the number of blinks in a day:

\[ 15 \times 24 = 360 , \text{blinks/day} \]

2. Then, calculate the blinks in a year:

\[ 360 , \text{blinks/day} \times 365 , \text{days/year} = 131400 , \text{blinks/year} \]

Now, we convert 131400 into scientific notation:

\[ 131400 = 1.314 \times 10^5 \]

Thus, the average person blinks approximately \(1.314 \times 10^5\) times in a year.

The correct response is: 1.314 × 10^5