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f(x)=(x+3)/2 For the function f define...

`f(x)=(x+3)/2`
For the function f defined above, what is the value of f (−1) ?

A

`-2`

B

`-1`

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
The value of f (−1) can be found by substituting −1 for x in the given function `f (x )=(x+3)/2`, which yields `f(-1)=(-1+3)/2` Rewriting the numerator by adding −1 and 3 yields `2/2` , which equals 1. Therefore, f (−1) = 1.
Choice A is incorrect and may result from miscalculating the value of `(-1+3)/2` as `(-4)/2` , or -2 . Choice B is incorrect and may result from misinterpreting the value of x as the value of f (−1). Choice D is incorrect and may result from adding the expression −1 + 3 in the numerator
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