That’s a tricky stem and leaf plot, Anw as the key shows 11|6 =16
So the most common arm span is 12 the least commons are 11,17,19,22 which appear only one time. So I’d say there are no outliers
As written, the denominator in both fractions is x, so the only restriction on the domain is ... x ≠ 0.
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We suspect you intend ...
... f(x) = 2/(x-4) +1/(x+2)
which is undefined when x = 4 or x = -2.
The domain is all real numbers except -2 and 4.
44x10^-2
or in other words
44 times 10 to the -2nd power