Answer:
tens=5
Step-by-step explanation:
1: 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 10....
2: 2, 4, 6, 8, 10....
3: 3, 6, 9, 12, 15, 18, 21, 24, 27....
4: 4, 8, 12, 16, 20, 24, 28, 30....
5: 5, 10, 15, 20, 25, 30, 35 40, 45...
As engine size increases, highway mileage decreases.
None of the numbers are Perfect Square.
6, 10, 12, and 14 are not <u>Perfect Square</u>, because each number are multiplied by two different numbers: