Answer:
If 3 students walked, then according to the given ratios, 18 students would have taken the bus.
Step-by-step explanation:
Given: 3 Walkers
1:2 --> 3:6 walkers to subway
1:3 --> 6:18 subway to bus riders
This is known as "5 take 3", where ordering is not important.

Answer:
O A) convenience sample
Step-by-step explanation:
O A) convenience sample
63,219 is overall the lower value, but has the greater hundreds and ones place.
Hope this helps!
2(11 + 3x) = 64
11 + 3x =64/2
11 + 3x = 32
3x = 32 - 11
3x = 21
x = 21/3
x = 7
A.