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Unformatted text preview: Examples: Solve the following inequality (a) x 2-6 x-7 < 0. (b) 2 x 3 + 13 x 2-8 x-46 6. 2. Rational Inequalities Critical numbers are values that make the rational expression equal to zero AND values that make it undened. Examples: Solve the following inequality (a) x + 12 x + 2-3 0. (b) 5 x-6 > 3 x + 2 Applications The revenue and cost equation for a product are R = x (50-. 0002 x ) C = 12 x + 150 , 000 where R and C are measured in dollars and x represents the number of units sold. How many units must be sold to obtain a prot of at least 1, 650, 000?...
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