Question

PLEASE HELP ITS DUE AT MIDNIGHT

Answer 1

Step-by-step explanation:

1. $\frac{9.00 - 7.50}{7.50} \times 100\% = 20\% \: increase$
2. $\frac{6.50 - 5.00}{5.00} \times 100\% = 30\% \: increase$
3. $\frac{4.50 - 2.00}{2.00} \times 100\% = 125\% \: increase$
4. $\frac{2.00 - 2.50}{2.50} \times 100\% = - 20\%$

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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