Answer:
Formula:
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Normal Price:

Explanation:
First, you have to find the current price of one cookie.
Since 7 cookies cost $2.80, then the price for one sale price cookie would cost
Then you would have to add the $0.75 to the sale price to get the normal price.

The normal price of a cookie would be $1.15.
The formula to get that answer would be:
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Hope this helps!