Paul plays piano in a restaurant. He starts work at 6:00 P. M. Every night, he plays for 1 hour 30 minutes, takes a 20-minute break, plays for 2 hours 10 minutes, takes another 10-minute break, and then plays until the restaurant closes at midnight. In all, how much time does Paul actually spend at the piano?

3 hrs an 40 mins

Step-by-step explanation:

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.