The basement of a large department store features discounted merchandise. Their policy is to reduce the previous month's price of the item by 11% each month for 4 months, and then give the unsold items to charity. Let be the sale price for the fourth month and the original price. Express as a function of
Edit your last sentence, you are missing your Let statement and your function.
Let S4 be the sale price for the fourth month and P the original price. Express S4 as a function of P
Well, after one month, the sale price is decreased by 11%, which leaves 89% of the price intact. After the second month, the same thing happens. So the fourth month will have (.89) to the 4th times the original price) P = Original Price \[\S _{4} = (.89)^{4} \times P \]
By what total percentage has the garment now been reduced from its original price?
I just gave you the answer my man. It is (.89) ^ 4. That is a number that is put in front of P. That will be a decimal that equals your percentage. (For a different example : If it was .5x, it would be 50%)
37.62
try again
what is (.89) ^ 4
no thats the final answer, (.89)^2 is 6274 btw.
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