Answer:
134.4 miles
Explanation:
Let me ask you this:
If you drove at 44.8 miles per hour exactly (which would be quite difficult to do repeatedly, so I don't know why they picked that number), how far would you have gone in one hour?
44.8 miles, right? 44.8 miles per hour, means that every hour you cover 44.8 miles.
Now what if you drove for 2 hours? Twice as many miles, right?
And if you drove for 3 hours? Three times as many miles, right? See the words? "Three times" the speed:
3 hours times 44.8 miles/hour
"hours" cancel out and we're left with miles, which is what we want:
3 x 44.8 miles = 134.4 miles