It's basically 5,000*2=10,000
and 10,000/2=5,000. your answer would be either they multiplied 5,000 by 2 and 10,000 divided by 2, they increased the sales by 5,000
Answer: 
Step-by-step explanation:
Using the values
and
, the slope is
.
So, the equation is:

I'm not very good with word problems but if I am correct it is 660 minutes so about 11 hours?