Which of the following functions is quadratic? O A. f(x) =2/x
B. f(x) = 5^2
O c. f(x) = 2x^3+ 3x^2 - 5
O D. f(x) = 3(x – 4)(x+3)

Which number line correctly shows 0.8 + 0.3?

Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.

Let us imagine that the number of automobile accidents in a certain region are related to the regional number of registered automobiles in tens of thousands (b1), alcoholic beverage sales in $10,000 (b2), and decrease in the price of gasoline in cents (b3). furthermore, imagine that the regression formula has been calculated as: y = a + b1x1 + b2x2 + b3x3 where y = the number of automobile accidents, a = 7.5, b1 = 3.5, b2 = 4.5, and b3 = 2.5 calculate the expected number of automobile accidents for a football weekend if the region has 25,000 registered vehicles, $75,000 worth of beer is sold, and a gas war causes a 10 cent drop in a gallon of gas.