Final answer:
To calculate the amount of fuel Mr. Sanford uses in a year, we need to first calculate how many hours he drives in a year. There are 52 weeks in a year, and Mr. Sanford works 5 days per week. So he works a total of 260 days in a year.
Step-by-step explanation:
To calculate the amount of fuel Mr. Sanford uses in a year, we need to first calculate how many hours he drives in a year. There are 52 weeks in a year, and Mr. Sanford works 5 days per week. So he works a total of 52 * 5 = 260 days in a year. Since he drives 8 hours per day, he drives a total of 260 * 8 = 2080 hours in a year.
Now let's calculate how many gallons of fuel Mr. Sanford uses in a year. We know that his truck has a gas tank that holds 210 gallons of gasoline, and his truck has a fuel economy of around 6 miles per gallon. So for every gallon of gasoline, he can drive approximately 6 miles.
Since he drives 2080 hours in a year and his fuel economy is 6 miles per gallon, he will use 2080 / 6 = 346.67 gallons of fuel in a year. However, since he has a gas tank that holds 210 gallons, he will need to fill up the tank multiple times in a year. So the actual amount of fuel he uses in a year will be slightly more than 346.67 gallons.
Therefore, the correct answer is D. 42,000 gallons.