Goal: Invite 200 countries and international organizations to participate in the exhibition and attract 70 million visitors.
The planned land area of the Expo Park is 5.28 square kilometers, including 3.93 square kilometers in Pudong and 0/0/.35 square kilometers in Puxi. The fenced area covers an area of about 3.28 square kilometers, with a total investment of 654.38+0.8 billion yuan. Infrastructure investment: 9 billion; Venue investment: 9 billion.
The World Meteorological Organization Pavilion has a total land area of 2,200 square meters.
Total construction area of the World Meteorological Organization Pavilion1230m2.
The China Pavilion of the Shanghai World Expo is located in the core area of the Expo site. The planned China Pavilion consists of the China National Pavilion with a building area of 20,000 square meters, the China Pavilion with a building area of 30,000 square meters and the Hong Kong, Macao and Taiwan Pavilion with a building area of 3,000 square meters. During the World Expo, China Pavilion is the main exhibition area and an important carrier for the theme interpretation of the Shanghai World Expo.
Located on the east side of Expo Axis in Pudong Area B, it starts from North Ring Road in the north, south ring road in the south, Shangnan Road in the west and Yuntai Road in the east, with an area of 6.52 hectares. (2) During the Expo in Hangzhou, Carnival Playground invested 6,543.8+0.5 million yuan to introduce large-scale amusement facilities. If the maintenance fee is not included, it is estimated that it will generate 330,000 income every month after opening. After the amusement facilities are opened, the maintenance cost from 654.38+0 to X is Y (ten thousand yuan), y = AX2+BX；; If the net income of amusement park after deducting investment and maintenance expenses is called G (ten thousand yuan), G is also a quadratic function about X 。
(1) If 1 month's maintenance cost is 20,000 yuan, and the next month's maintenance cost is 40,000 yuan, find the analytical formula of Y about X;
(2) Find the analytical formula of the net income g of X;
(3) Q: After the facilities were opened for several months, the net income of the playground reached the maximum? In a few months, you can recover your investment. Answer: (1) y = x2+x;
(2) Net income G =-x2+32x-150;
(3)g=-(x- 16)2+ 106, that is, the net income of the amusement park reaches the maximum after the design opening 16 months; At 0
Solution: y=ax2+bx
When x= 1 y=2=a+b
When x=2, y=2+4=4a+2b.
Derive a = 1 and b = 1.
y=x^2+x
g = 33x- 150-y = 33x- 150-(x * x+x)=-x * x+32x- 150 =-(x- 16)*(x- 16)+ 106
When x= 16, g max g=46.