1. Mackenzie spent a lot of time on her project for Columbus Day. On Monday she worked for 2 hours and 33 minutes on making a poster. On Tuesday she worked for 1 hour and 28 minutes drawing a picture of Columbus. On Wednesday she spent two hours building a model of a Taino village. On Thursday she worked another 2 hours and 25 minutes putting everything together. How long did she work in all? Remember you have to convert minutes to hours.

She worked 8 hrs 26 min in all

To find out how long Mackenzie worked in total, we need to add up the hours and minutes she worked each day and then convert it to the correct format.

First, let's convert the minutes to hours:
- On Monday, she worked for 2 hours and 33 minutes, which is equal to 2 + (33/60) = 2.55 hours.
- On Tuesday, she worked for 1 hour and 28 minutes, which is equal to 1 + (28/60) = 1.47 hours.
- On Wednesday, she worked for 2 hours, which is equal to 2 hours.
- On Thursday, she worked for 2 hours and 25 minutes, which is equal to 2 + (25/60) = 2.42 hours.

Now let's add up all the hours:
2.55 + 1.47 + 2 + 2.42 = 8.44

So, Mackenzie worked for a total of 8 hours and 44 minutes.

To convert the minutes to the correct format, we consider that 60 minutes equal 1 hour, we can subtract 60 minutes from the total and add 1 hour:
8 hours and 44 minutes can be expressed as 8 hours + 44 minutes = 8 hours + (44/60) hours = 8.73 hours.

Therefore, Mackenzie worked for a total of approximately 8 hours and 44 minutes.