A dog slept from 10:51 p.m. to 1:22 a.m. how long does a dog sleep

2 hours and 31 minutes

Step-by-step explanation:

10:51 +9 =11:00

+ 2 hours = 1:00 +22 = end time

so added together 22+9= 31 + the 2 hours = 2 hours and 31 minutes

3 lessons a day (rounded up to nearest whole number)

Step-by-step explanation:

First we need to find out how many weeks 42 days is:

42 / 7 = 6

We have 6 weeks and we know Abigail does not want to work on weekends. That gives us five days a week to get our work done:

5 X 6 = 30

Abigail has 30 days to complete 86 lessons. We find out how many a day by dividing the total lessons by days available:

86 / 30 = 2.866 lessons per day