The table shown describes the value of a laptop originally priced for $1,500 and losing 3/5 of its value every year after purchase. About how much was the average rate of change for the 5 year period?

Rounding  means we are finding the closest  benchmark number. abenchmark number  is one that is easy to  use  in operations and/or quicker to say and write. a  number  line can us  round  by showing the closestbenchmark number. five is the midpoint  between  0 and 10.

It has been a while since i have done these but i think it is (6•8)+(10•6)