Answer:
all the time
Step-by-step explanation:
X : the gas used by first car in 1 particular week
y : the gas used by second car in 1 particular week

Answer:
All of the following statements are true because the products, three or four numbers, remain the same regardless of how the numbers are grouped.
Answer:
1/3
Step-by-step explanation:
The reciprocal of a number is 1 divided by the number.
The reciprocal of 3 is 1 divided by 3, or simply 1/3.
The answer is 270 trucks.