The correct answer is 49! :) Hope you have a good day
so each ticket costs 12 dollars multiply that bye 5 you get 60
each bucket of popcorn costs 4.50 then multiply that bye 2 you get 9
then all five girls get a soda which costs 4.75 so you would multiply 4.75 bye 5 which is 23.75
so in total you would get B.92.75
The rate of change of stamp collection was $57.5 per year.
Rate is comparison of two related quantities.
Often the second quantity is time (per second, per hour, etc) but it can be anything.
Can be in the style "this per that" or as a single number calculated using division.
Example: Sam makes 3 pancakes every 6 minutes, that is a rate of:
• 3 pancakes per 6 minutes
• 0.5 pancakes per minute
• 30 pancakes per hour
• an hourly rate of 30
By formula the rate of change = Change in cost/ Time taken
=( $980 - $420)/ 8years
= $460/ 8 years
= $57.5 per year
Thus the rate of change of stamp collection was $57.5 per year.
Learn more about rate here :
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