SOLUTION: In a certain state, the sales tax T on the amount of taxable goods is 8% of the value of the goods purchased (x), where both T and x are measured in dollars. (a) Express T as a fu

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Question 1141874: In a certain state, the sales tax T on the amount of taxable goods is 8% of the value of the goods purchased (x), where both T and x are measured in dollars.
(a) Express T as a function of x.
T(x) =

(b) Find T(250) and T(4.80). (Round your answers to two decimal places.)
T(250) =
T(4.80) =

Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
T(x) = .08 * x

T(250) = .08 * 250 = 20

T(4.80) = .08 * 4.80 = .384

the function name is T.
the argument of the function is x.

T(250) replaces the argument of x with the argument of 250.
therefore, everywhere in the function you see x, you replace it with 250.

T(4.80) replaces the argument of x with the argument of 4.8.
therefore, everywhere in the function you see x, you raplace it with 250.

here's a reference on functional notation.

https://mathbitsnotebook.com/Algebra1/Functions/FNNotationEvaluation.html