Answer:
Step-by-step explanation:
-8
a option 3√15 is the correct option
5.21666667
yopu do the total bill divided by 3
6
In 180 days the three of them will do their laundry again on the same day.
we need to find the least common factor or 9, 10 and 12:
LCM(9, 10, 12) = 180
it's about 18, as per the graph
