A price increases 7% due to inflation and is then reduced 10% for a sale. Express the final price as a function of the original price, p.
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The beginning place is to make sure you label all your variables.
f(p)= final price
p= original price.
What happened to the original price. Well we know that the price increased by 7% and the price was later reduced by 10%
107%=1.07 x .10%= .107
Multiply that by 100= 96.3%
Just to clarify where I got the 107%.
The original price is still 100% of the price. If you increase it by 7%, you must add it to the original 100%.
So, that is 100%+7%= 107%.
oh, and a small typo. I wrote
It should be
1.07 x .10=.107
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