Hamburgers cost $2.50 and cheeseburgers cost $3.50 at a snack bar. ben has sold no more than $30 worth of hamburgers and cheeseburgers in the first hour of business. let x represent the number of hamburgers and y represent the number of cheeseburgers. the inequality 2.50x + 3.50y ≤ 30 represents the food sales in the first hour.
if ben has sold 4 cheeseburgers, what is the maximum value of hamburgers ben could have sold

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Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in