Each year for 4 years, the time it takes you to run a mile decreases by 6 seconds. Find the total change in time.

To set up this equation, we want to find the total change in time (x) over 4 years if every year your time decreases by 6 seconds. Our equation should look something like this:

x = 6*4

To solve this, you just have to multiply 6*4!

x = 24

This means that over 4 years, you have cut 24 seconds off of the time it takes you to run a mile! Your total change in time would then be 24 seconds!