In 1994, school lunch at Champion High School was $1.20. In 1999, the cost increased to $2.25. Find the annual rate of change in the price of school lunch from 1994-1999.

$0.18 per year
$0.20 per year
$0.21 per year
$1.05 per year

Question

In 1994, school lunch at Champion High School was $1.20. In 1999, the cost increased to $2.25. Find the annual rate of change in the price of school lunch from 1994-1999.
 
    $0.18 per year  
   $0.20 per year  
   $0.21 per year  
   $1.05 per year

anonymous · Answer

1999-1994=5 years
 $2.25 -$1.20=$1.05
$1.05/5= 0.21 per year
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