need help don't know this.

Question

The total amount spent on plasma flat-panel TVs in the United States changed from $5302 million in 2006 to $2907 million in 2009. Find and interpret the average rate of change in sales, in millions of dollars per year, to the nearest hundred.

Answer 1

The average rate of change is the same as the slope.

 

Slope=rise/run

 

Slope=($2907million dollars-$5302million dollars)/(2009-2006)

=-$2395million dollars/3years

=-$798.333 million dollars per year

To the nearest hundred

=-$800million dollars per year

 

Hope this helps!