Each year for 5 years the time it takes you to run a mile decreases by 8 seconds. find the total change in time

Total change in time is -40 seconds. It is represents by the integer -40 because negative sign represents the decrease in time.

Step-by-step explanation:

It is given that each year for 5 years the time it takes you to run a mile decreases by 8 seconds.

Total number of year = 5

Change in each year = -8

Here negative sign represents the decrease in time.

Total change in time = Total number of year × Change in each year

Therefore, total change in time is -40 seconds. It means, we need 40 seconds less to run a mile.