Final answer:
William can expect his paycheck for this week to be $148.
Step-by-step explanation:
To calculate William's paycheck for the week, we need to add up the total number of hours and minutes he worked and multiply it by his hourly rate of $8.
First, let's convert the minutes into hours. 40 minutes is equal to 40/60 = 0.67 hours, and 20 minutes is equal to 20/60 = 0.33 hours.
Now, let's add up all the hours: 3 hours and 40 minutes = 3 + 0.67 = 3.67 hours, 2 1/2 hours = 2.5 hours, 4 hours and 20 minutes = 4 + 0.33 = 4.33 hours, and 8 hours = 8 hours.
Adding up all the hours, we get a total of 3.67 + 2.5 + 4.33 + 8 = 18.5 hours.
Finally, we multiply the total number of hours (18.5) by the hourly rate ($8) to get the paycheck amount: 18.5 * $8 = $148.
Therefore, William can expect his paycheck for this week to be $148.