Mr. Richardson is driving to a town 85 miles away. He drives 35 miles per hour for 2 hours before stopping for lunch. He drives 6 more miles and stops for gas. Which expression shows how many miles, m, Mr. Richardson has left to drive?
After driving for 2 hours at 35 miles per hour, Mr. Richardson has already covered a distance of 2 x 35 = 70 miles.
After stopping for lunch and driving an additional 6 miles, his total distance traveled becomes 70 + 6 = 76 miles.
The expression for the remaining distance, m, is:
m = 85 - 76
m = 9 miles
To find out how many miles Mr. Richardson has left to drive, we need to subtract the distance he has already traveled from the total distance of 85 miles.
The distance traveled so far is the sum of the distance covered before stopping for lunch (35 miles per hour for 2 hours) and the distance covered after stopping for lunch (6 miles).
The distance covered before stopping for lunch is 35 miles/hour * 2 hours = 70 miles.
Therefore, the total distance covered so far is 70 miles + 6 miles = 76 miles.
To find how many miles Mr. Richardson has left to drive, we subtract the distance traveled from the total distance:
Total distance - Distance traveled = 85 miles - 76 miles = 9 miles.
So, the expression to show how many miles Mr. Richardson has left to drive is m = 85 - 76 = 9 miles.
To find the expression that represents the number of miles Mr. Richardson has left to drive, we need to subtract the distance he has already covered from the total distance of 85 miles.
First, let's calculate the distance he has covered before stopping for lunch. The formula to calculate distance is:
Distance = Speed x Time
Mr. Richardson drives at a speed of 35 miles per hour for 2 hours, so we can substitute these values into the formula:
Distance = 35 mph x 2 hours = 70 miles
Now, we know that Mr. Richardson has covered 70 miles. After stopping for lunch, he drives an additional 6 miles. Therefore, the total distance he has covered is:
70 miles + 6 miles = 76 miles
To find the distance he has left to drive, we subtract the total distance he has covered from the total distance of 85 miles:
85 miles - 76 miles = 9 miles
So, the expression that represents the number of miles Mr. Richardson has left to drive, m, can be written as:
m = 85 - 76
Hence, the correct expression is "85 - 76".