The table shows data from local day-care centers, representing the number of children in attendance (x) and daily food costs in dollars ().
х
у
x2
ху
16
45
256
720
22
58
484
1,276
28
73
784
2,044
32
94
1,024
3,008
45
141
2,525
6,345
Ex=143 Σy=411 x2=4,573 Sxy=13,393
Which regression equation correctly models the data?
O y = 2.87x + 0.12
y = 2.87x + 11.85
O y = 3.39x - 14.75

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.