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Lemur [1.5K]
3 years ago
9

Consider the function f(x) = 9^x. Which statement MUST be true? A) f(4)/f(1) = f(8)/f(5) B) f(4)·f(1) = f(8)·f(5) C) f(4) − f(1)

= f(8) − f(5) D) f(4) − f(1) = f(−4) − f(−1)
Mathematics
2 answers:
shtirl [24]3 years ago
5 0

Step-by-step explanation:

the true answer is (A)

the right side : 9^4 / 9^1 = 9^3

the left side : 9^8 / 9^5 = 9^3

two side are equal

AnnyKZ [126]3 years ago
5 0

Answer:

A

Step-by-step explanation:

A

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Step-by-step explanation:

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2. Combine like terms -7x + 15 = 15-7x

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2 years ago
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9514 1404 393

Answer:

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The domain is all real numbers except x=3.

_____

<em>Additional comments</em>

It is useful to become familiar with the domains of different functions. As we saw above, the reciprocal of 0 is undefined. The square root of a negative number is undefined. The log of a non-positive number is undefined. Trig functions are defined everywhere, but their inverse functions are not. Polynomial functions are defined everywhere, but ratios of polynomials have the same restriction on denominators that we see above.

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