Robin can clean 727272 rooms in 666 days. how many rooms do she clean in 9 days

Robin can clean 9828 rooms in 9 days

Step-by-step explanation:

Since Robin can clean 727272 rooms in 666 days, we can find how many rooms she can clean in 1 day by dividing 727272 by 666

number of rooms cleaned by Robin in 1 day = 727272 rooms/666 days = 1092 rooms/day

We can then find how many rooms she can clean in 9 days by multiplying 1092 by 9

1092 rooms/day * 9 days = 9829 rooms

the answer is a.

135 and 80

step-by-step explanation:

noncoplanar points are points that do not lie on the same line.