18. A lumber yard has fixed costs of $1064.00 per day and variable costs of $0.37 per board-foot produced. Lumber sells for $1.37 per board-foot. How many board-feet must be produced and sold daily to break even? 19. A drug company establishes that the most effective dose of a new drug relates to body weight as shown below. Let body weight be the independent variable and drug dosage be the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the most effective dosage for a person weighing 140 pounds? Body Weight (lbs) Drug Dosage (mg) 50 10 100 11 150 17 200 19 250 23
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37x\), where x is the number of board-feet produced and sold. The revenue function is given by \(R(x) = 1.37x\). To find the break-even point, we set the cost equal to the revenue: \[1064 + 0.37x = 1.37x\] Show more…
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