A fuel consortium chairman at an airport wants to look at the relationship between cost of crude oil and the cost of jet fuel. The data show a linear pattern with the summary statistics shown below: mean standard deviation 30.8 cost per barrel of crude oil (dollars) = 57.4 y=cost per barrel of jet fuel (dollars) y = 69.9 8y = 35 T=0.99 Find the equation of the least-squares regression line for predicting the cost of jet fuel from the cost of crude oil. Round your entries to the nearest hundredth.

Answer this question only if you know the answer! 30 points and

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry.how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.