If she worked 40 regular hours than we must multiply 40 by 7.
40 * $7.00 = $280
Now we need to find how much she earned for her 9 hours of overtime. For overtime she gets paid her normal pay plus half of her normal pay. So $7 + $3.5 = $10.5 So for each hour of overtime she gets paid $10.5
9 * $10.5 = $94.5
Next we need to find out how much she earned for her 12 hours of holiday time. She gets paid double for holiday time which is $7*2 = $14. So for each hour of holiday time she gets paid $14
12 * $14 = $168
Lastly we need to add all those earnings together to find out how much she earned that whole week with verything included.