What is the total cost or sale price to the nearest cent? $12 lamp: 5% tax*
2 answers:
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Step-by-step explanation:
In order to get the inverse of equation, we will interchange the variables and solve for x and y as follows.
whereas,
or x =
Now, on interchanging the variable we will get the equation as follows.
y =
f(3) = 1.9
Solution:
Given function:
To find f(3):
Substitute x = 3 in the given function.
Let us first simplify .
Apply exponent rule:
The value of . (using calculator)
Substitute this value in f(3).
f(3) = 1.9
Hence the value of f(3) is 1.9.