Answer
See the picture.
Work Step by Step
$N=3000$
Frequency of "Dialup":
$fr(Dialup)=P(Dialup)\times N=0.747\times3000=2241$
Frequency of "Cable Moden":
$fr(Cable~Moden)=P(Cable~Moden)\times N=0.142\times3000=426$
Frequency of "DSL":
$fr(DSL)=P(DSL)\times N=0.092\times3000=276$
Frequency of "Other":
$fr(Other)=P(Other)\times N=0.019\times3000=57$
