The base is 6 so you'll need to replace b with 6 and the height is 8 so you'll need to replace h with 8.
Answer:
Concept: Number Analaysis
- The first option goes back 9 spaces hence
- Second one you to forward 10 spaces hence
- Using that logic solve the rest!
Should be 270 minutes because 1500 is 250 6 times so you do 45 minutes 6 times which ends up as 270