Question

HELP!!!!In 2004, school lunch Rockwell high school was $2.20.In 2009 the costs increased to $3.25. Find the annual rate of change in the price for school lunch from 2004 to 2009.
a. $0.20 per year
b. $0.21 per year
c. $1.05 per year
d. $0.18 per year

Answer 1

Answer:

$0.21 per year

Step-by-step explanation:

$0.21 times 5 years equals $1.05

So its $0.21

Answer 2

The annual rate of change is $0.21 per year

Cost of lunch in 2004 = $2.20

Cost of lunch in 2009 = $3.25

Difference in cost = $3.25 - $2.20 = $1.05

Number of years = 2009 - 2004 = 5 years

The annual rate of change will be:

= Difference in cost / Years taken

= $1.05/5

= $0.21 per year.

Therefore, the annual rate of change is $0.21 per year.

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