The exponential regression equation that best fits the data would be:
.
To find these values, you have to enter the values in the table into a regression calculator. You could use a graphing calculator or online one.
The 1.74 value is the starting amount and the 3.69 is the rate of change.
You multiply pi times 3m which equals 9.42
<u>Answer:</u> $12.60
<u>Explanation</u>:
An alternate and easier way of finding the clearance price of an item is to take the percentage off and subtract it from 100. This way you don’t have to subtract your product from the total price to find your answer. This’ll make more sense when I show both methods.
Method #1 (harder):
Original price: $18
30% discount
Make the percentage a decimal and multiply it by the original price.
18 x .3 = 5.4 or $5.40
Original price - 5.4 = 12.6 or $12.60
Method #2 (short cut, one less step):
100% - 30% = 70%
Think about it like this - the 30% is what you’re NOT paying for while the 70% is what the item will actually be worth.
Original price x .7 = 12.6
Multiply the three numbers.
