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Misha Larkins [42]
2 years ago
10

If f (x) = StartRoot 4 x + 9 EndRoot + 2, which inequality can be used to find the domain of f(x)? StartRoot 4 x EndRoot greater

-than-or-equal-to 0 4 x + 9 greater-than-or-equal-to 0 4 x greater-than-or-equal-to 0 StartRoot 4 x + 9 EndRoot + 2 greater-than-or-equal-to 0
Mathematics
2 answers:
maxonik [38]2 years ago
6 0

Answer:

Step-by-step explanation:

"f (x) = StartRoot 4 x + 9 EndRoot + 2" should be written as

 

Note that √(4x + 9) is a variation of the basic function y = √x, whose domain is [0, ∞ ).

The domain of f(x) = √(4x + 9) + 2 is found by taking the "argument" 4x + 9 of √(4x + 9) and setting it equal to zero:

4x + 9 ≥ 0, or

4x ≥ -9, or

x ≥ -9/4

This is the domain of the given function f(x) = √(4x + 9) + 2.  So long as x is ≥ -9/4, the function f(x) will be defined.

AveGali [126]2 years ago
5 0

b

Step-by-step explanation:

got it right on edg

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