The rectangle with maximum area will actually be a square.
Each side will be of length 7/4 = 1 3/4.
You need to start calculating from the innermost bracket and if there are no signs to do any operation then you need to multiply
Distance traveled in the first hour = 50 miles
Distance traveled in the second hour = 72 miles
Distance traveled in the third hour = 46 miles
Total distance = 50 + 72 + 46 = 168 miles
23 miles = 1 gallon
168 ÷ 23 = 7.30 gallons (nearest hundredth)
Answer: 7.30 gallons
137,638
+52,091
-------
189,729 ⇨ 189,730