You can get yourself a tutor or watch videos on the parts you dont understand! Sometimes it's just about how your learning it. It may not be being taught in a way you understand. That's how videos really help, since they are teaching it in a different style.
Ok 30min:120 min
= divided both by 30
~ gives you 1:4
1 thousand
1 hundred---- need to round up
6 tens
1 ones
Would be rounded up to 1200
Hope this helps
Answer:
Options (3) and (6)
Step-by-step explanation:
"A straight line is a set of all points between two points and extending beyond these points."
Therefore, from the given diagram,
Arrows connecting set of two points B and C and D and E will be straight lines.
Geometrically we denote them with an arrow over the line.
and 
Therefore, Options (3) and (6) will be the answer.
The answer to the question is a