20. This scatter plot records data about the number of hours, x, per month a company devotes to work safety training and the number of work-hours, y, lost per month due to accidents on the job. The linear regression line for the data is �� = −6.486�� + 68.8667. Predict how many work hours would be lost if the company devoted no hours to work safety training. 70
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A. 80 hours B. 70 hours C. 60 hours D. 50 hours

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.