Jan quint earn 11.00 an hour at her job and is entitled to time and a half for overtime and double time on holidays last week she worked 40 hours of regular time 9 hour of overtime and 12 hours of holiday time

Looks like you didn't finish because there is no question.  I'll break that problem down for you and hopefully the missing question will be answered. :) 

$11 x 40h = $440
Overtime pay and holiday pay is time and a half = $11 x 1.5 = $16.50
$16.50 x 9 hours overtime = $148.50
$16.50 x 12 hours holiday = $198.00
Holiday and OT= $346.50
Total of check including regular hours, holiday pay and overtime = $786.50