Posted by rachel on Tuesday, November 16, 2010 at 3:49pm.
can you answer this question?
a store is offering a discount of 30% on a suit. There is a sales tax of 6%.
A) using a composition of function, represent this situatio in which the discount is taken before the sales tax is applied.
B) using a composition of functions represent the situation in which the sales tax is applied before the discount is taken.
C) compare the composite functions from parts a and b. does one of them result in a lower final cost? explain why or why not.

algebra 2  Reiny, Tuesday, November 16, 2010 at 4:39pm
Suppose the selling price of the suit is $x
A)
after taking discount of 30%, the selling price of the suit is .7x
now final cost = (1.06)(.7x) = .742x
B) apply sales tax first
cost = 1.06x
now apply the discount ...
final price = (1.06x)(.7) = .742x
well, well, what do you kow?
not to be confused with
" I went to a restaurant and had a coupon of $25"
The waiter prepared my total bill including a 6% tax , then deducted the $25.
I argued the fact that he should have taken off the $25, then applied the sales tax.
The waiter replied that it wouldn't make any difference.
Who is right?
Can you see the difference between my question and your question?
Answer This Question
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