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  • 23-08-2019
  • Mathematics
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If r(x) = 3x – 1 and s(x) = 2x + 1, which expression is equivalent to (r/s)(6)?

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carlosego
carlosego carlosego
  • 23-08-2019

For this case we have the following functions:

[tex]r (x) = 3x-1\\s (x) = 2x + 1[/tex]

We must find (\ frac {r} {s}) (x)

By definition we have to:

[tex](\frac {r} {s}) (x) = \frac {r (x)} {s (x)}[/tex]

So:

[tex](\frac {r} {s}) (x) = \frac {3x-1} {2x + 1}[/tex]

We evaluate the function at[tex]x = 6[/tex]:

[tex](\frac {r} {s}) (6) = \frac {3 (6) -1} {2 (6) +1} = \frac {18-1} {12 + 1} = \frac {17 } {13}[/tex]

Answer:

[tex](\frac {r} {s}) (x) = \frac {17} {13}[/tex]

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