Question

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

Answer 1

Answer:

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

$\text{Total change in time}=5\times (-8)$

$\text{Total change in time}=-40$

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

Answer 2

-40 seconds
simple as that