So last week Paul worked 2.5x this week's hours, so he worked a total of 2.5x15= 37.5 hours last week.
Answer:
Last Option
Step-by-step explanation:
We have a triangle and we know its three sides.
We want to find one of your anguos. Then we use the cosine theorem.

Where

Now we solve for x from the equation

The square root of 12 is 3.4641 so 3.6 would be greater than 3.4641