Question

PLEASE HELP ITS DUE AT MIDNIGHT

Answer 1

Explanation:

1. 
   `(9.00 - 7.50)/(7.50) * 100\% = 20\% \: increase`
2. 
   `(6.50 - 5.00)/(5.00) * 100\% = 30\% \: increase`
3. 
   `(4.50 - 2.00)/(2.00) * 100\% = 125\% \: increase`
4. 
   `(2.00 - 2.50)/(2.50) * 100\% = - 20\%`

In order to get the increase or decrease, we need to get the difference of the two prices first. Then, pick a "reference year".

From the calculations, notice how I made the earlier years as my reference points. If the calculations produced positive results, therefore, it has increased. If it produced a negative results, from the reference year's price, it has decreased in price.

Answer 2

Answer:
The rest of the question is the attached figure
The percent change =
If (+ve) increase and if (-ve) decrease
Part A: What is the percent of change in the cost of a pizza?
The initial price = $7.5
The final price = $9
The percent change = %
Part B: What is the percent of change in the cost of a cheeseburger?
The initial price = $5
The final price = $6.5
The percent change = %
Part C: What is the percent of change in the cost of a serving fries?
The initial price = $2
The final price = $4.5
The percent change = %
Part D: What is the percent of change in the cost of a hot dog?
The initial price = $2.5
The final price = $2
The percent change = %
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