How do i get to see the giant buddha? i'm staying in BP Int'l hotel. and how much is the vegetarian food cost?

From your hotel, you can take a taxi to reach Kowloon MTR Station or you can walk to reach there by asking the local people for direction. At Kowloon Station, you can take Tung Chung Line to reach Tung Chung Station. Then you can easily find the Ngong Ping 360 Cable Car Station. Take that cable car to reach Ngong Ping Town and then walk to reach the Big Buddha.
For the cost of the vegetarian food, do you refer to the food the hotel provides or the food served by other restaurants?