During the summer, we have a big festival in my town called the Taste of Joliet that I attend every year. I always wondered how much money they make based on the huge amount of people that attend on the night they have a famous singer perform. The admissions fee is $15 for adults and $5 for children under 12. On the performance day, about 25,000 people show up. On performance night the money made on admissions is $295,000. Of the money made on performance night, how many people are adults and how many are children?

A= adults

C= children

total number; A + C = 25,000

total income; 15A + 5C= 295,000

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.