Question

The integer -3 would BEST represent which of these events?

Answer 1

Answer:

Hence, ||| only is the correct option.

Step-by-step explanation:

" By the integer '-3' we mean there is a decrease in the quantity of anything or that it is lacking behind ".

| statement: You gain 3 pounds

is a positive quantity as there is gain of something. so integer '+3' will be used to define it.

|| statement: You set your clock 3 hours ahead.

is also a positive quantity as the time is leading by 3 hours; so integer '+3' will be used to define it.

||| statement: You use 3 gallons of gas.

is a negative quantity as after the usage of 3 gallons of gas the quantity of gas will decrease so integer '-3' will be used to define it.

Hence, ||| only is the correct option.

Answer 2

The correct answer would be number 3 only because you are taking away when you have a negative number. SO u are taking away 3 gallons of gas. 
Hope this helped!