To find out how long it takes for light to travel from the Sun to Earth, we need to convert the distances from miles to kilometers and then use the function \( d(t) = 300,000t \) to find the time.
First, let's convert the distances from miles to kilometers. There are approximately 1.60934 kilometers in a mile.
Given:
- Minimum distance from the Sun to Earth: 91.4 million miles
- Maximum distance from the Sun to Earth: 94.5 million miles
Step 1: Convert the distances to kilometers.
Minimum distance: \[ 91.4 \text{ million miles} = 91.4 \times 10^6 \text{ miles} \times 1.60934 \text{ km/mile} \approx 147.1 \text{ million kilometers} \]
Maximum distance: \[ 94.5 \text{ million miles} = 94.5 \times 10^6 \text{ miles} \times 1.60934 \text{ km/mile} \approx 152.1 \text{ million kilometers} \]
Step 2: Use the formula \( d(t) = 300,000t \) to find the time.
For the minimum distance of approximately 147.1 million kilometers:
\[ d(t) = 300,000t \] \[ 147,100,000 = 300,000t \] \[ t = \frac{147,100,000}{300,000} \approx 490.33 \text{ seconds} \]
For the maximum distance of approximately 152.1 million kilometers:
\[ d(t) = 300,000t \] \[ 152,100,000 = 300,000t \] \[ t = \frac{152,100,000}{300,000} \approx 507 \text{ seconds} \]
Step 3: Rounding the answers to the nearest tenth.
Minimum time: \[ 490.33 \text{ seconds} \approx 490.3 \text{ seconds} \]
Maximum time: \[ 507 \text{ seconds} \approx 507.0 \text{ seconds} \]
Final Answer: Light takes between 490.3 seconds and 507.0 seconds to travel from the Sun to Earth.