Explain how you can rename 5,400 as hundreds

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Alex took his brother to a birthday party. the party was scheduled to last for 1 and 3/4 hours but they stayed for 4/5 of an hour more. how long did she stay at the party?