Section 9.1 – Systems of Equations

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Presentation transcript:

Section 9.1 – Systems of Equations Application Problems P. 650 #64-78 evens

Revenue meets cost when 233333 units are sold. 64. Revenue meets cost when 233333 units are sold. The revenue and cost is approximately $968333.33

Revenue meets cost when 3133 units are sold. 66. Revenue meets cost when 3133 units are sold. The revenue and cost is approximately $10307.86

68. Selling 400 units would be the break-even point.

70. b) As the amount at 6.5% increases, the amount at 8.5% decreases. The amount of interest also decreases. c) To attain $1600 per year, invest $5000 at 6.5% and invest $15000 at 8.5%.

72. Would have to sell more than 500000 books for second salary offer to be better.

74. The market equilibrium is 99.987 bushels per day.

76. y x 2x + 2y = 280 y = x – 20 80 x 60

78. y x 2x + 2y = 210 x = 1.5y 63 x 42