8. Using leading coefficient test, what could be the behavior of the graph of f(x) = -x3 + x² – 19? A. Rising on both left and right end of the graph. B. Falling on both left and right end of the graph. C. Rising on the left and falling on the right end of the graph. D. Falling on the left and rising on the right end of the graph. 9. A company's profit in thousands of pesos is determined by the number of branches x it operates: P(x) = x(x – 15)(x – 20). What is the profit if x = 5? A. 750 В. 1 500 С. 1875 D. 750 000 10. A sales manager of a shoe factory determines that its profit, P, in thousands of pesos, can be modeled by the function P(x) = 0.7x3 + x2 – 10, where x represents the number of pair of shoes sold. What is the profit when there are 100 pairs of shoes sold? A. P 400 B. P 709 990 C. P 790 593 D. P 850 390
8. Using leading coefficient test, what could be the behavior of the graph of f(x) = -x3 + x² – 19? A. Rising on both left and right end of the graph. B. Falling on both left and right end of the graph. C. Rising on the left and falling on the right end of the graph. D. Falling on the left and rising on the right end of the graph. 9. A company's profit in thousands of pesos is determined by the number of branches x it operates: P(x) = x(x – 15)(x – 20). What is the profit if x = 5? A. 750 В. 1 500 С. 1875 D. 750 000 10. A sales manager of a shoe factory determines that its profit, P, in thousands of pesos, can be modeled by the function P(x) = 0.7x3 + x2 – 10, where x represents the number of pair of shoes sold. What is the profit when there are 100 pairs of shoes sold? A. P 400 B. P 709 990 C. P 790 593 D. P 850 390
Chapter2: Equations And Inequalities
Section2.5: Quadratic Equations
Problem 53SE: Suppose that an equation is given p=2x2+280x1000 , where x represents the number of items sold at an...
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