Answer:
D. y = 2 1/16
Explanation:
You want to know the value of f(x) when x = 1/4 and f(x) = x²+2.
Domain and Range
The domain of a function is the set of values for which it is defined. The given function f(x) is defined for all values of x. However, the problem statement tells you the only domain value of interest is x = 1/4.
The range is the set of function values corresponding to the domain values. Here, the only range value of interest is the value of f(1/4).
Evaluation
Put the value of the variable where the variable is in the function definition and do the arithmetic.
y = f(1/4) = (1/4)² +2 = 1/16 +2
y = 2 1/16
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Additional comment
A calculator can help you evaluate an expression.