The question says the machine uses up m gallons of oil each hour on weekends.
This means that if the machine works for 24 hours each day, it implies that:

There are only two days on weekends i.e. Saturday and Sunday.
This means that if the amount of oil used in 1 day in the weekend is 24m, then we can say:
Saturday: oil used is 24m
Sunday: oil used is 24m
Total oil used during the weekend is:
55% of 1800 = 0.55(1800) = 990...so there are 990 girls in the school
30% of 990 = 0.30(990) = 297...so there are 297 girls who take the bus
Answer:
-5x-1
Step-by-step explanation:
It shows he is a jelous person that likes to do with own thing and he also does not like the ring. It also shows he is a mean person
A.
Faces - 8
Lateral Faces - 6
B.
Vertices - 12
C.
Edges - 18
D.
The base of the prism is a hexagon and the figure as a whole is a hexagonal prism.