Pilar is starting a small business that makes specialized stationery. she finds that producing larger quantities of a design saves her money. each print run costs $50 plus $2 for each item , this statement can be represented by y=2x+50 . she can sell each item for $4.50. so her revenue, y, is equal to 4.5 times the number of items : y=4.5x . the solution of system of equations is break-even point . how many items must she sell to break even ?

Pls! does anybody know a shortcut for answering these types of questions in the future?

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.

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.