Question

Seven days ago, the gas tank on Roses car was filled with 20 gallons of gasoline. Today there are 6 gallons of gasoline. What integer represents the change of gasoline in the past seven days?

Answer 1

Answer: -14 gallons.

Explanation:

Given : Seven days ago, the gas tank on Roses car was filled with 20 gallons of gasoline.

Today there are 6 gallons of gasoline.

∵ 20> 6 , it means there is decrease in the amount gasoline.

Change of gasoline in the past seven days = Amount gasoline seven days before- Amount gasoline now .

i.e. Change of gasoline in the past seven days = 20 gallon - 6 gallons=14 gallons

Since decrease is represented by negative (-) sign in integers.

∴ The integer represents the change of gasoline in the past seven days = -14 gallons.

Answer 2

-14

Explanation:

The amount of change is found by subtracting the original amount from the new amount:

6 gal - 20 gal = -14 gal

The appropriate integer is -14.