Question

2. The picture shows a feeding trough that is shaped like a right prism.

Answer 1

So a)
it has 4 faces
first=30
second=30
third=20
fourth=20
b)surface area=120

 3.8/50 students preferred sports when the survey was first taken, we can infer that more kids are going to picks sports when we take the survey again. 
Out of 50 randomly picked students only 4 said they watch tv, we can infer that this number will stay a single digit when we take the survey again