Use the given graph of f(x) = ax2 + bx + c to solve the specified inequality.f(x) < 0
A. all real numbers
B. x < 0
C. no solution
D. x < 6
Answer: C
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Solve the problem.An electrical component has a lifetime given by the probability density function function 
where x is measured in hours. What is the probability that the component will work for at least 21 hours?
A. 0.811 B. 0.795 C. 0.827 D. 0.787
Classify the following as the equation of a parabola, a circle, an ellipse, or a hyperbola.16y2 = 576 - 36x2
A. Parabola B. Circle C. Hyperbola D. Ellipse
Which of the following mathematical expressions is used to compute the degree of financial leverage (DFL) at a particular level of earnings before interest and taxes (EBIT)? Assume the firm has no preferred stock.
A. DFL = Earnings before interest and taxes ÷ Earnings per share (EPS) B. DFL = Gross profit ÷ Earnings before interest and taxes C. DFL = Sales ÷ (Earnings before interest and taxes - Interest) D. DFL = Earnings before interest and taxes ÷ (Earnings before interest and taxes - Interest) E. DFL = (Earnings before interest and taxes - Interest - Taxes) ÷ Number of shares
If f is a differentiable function, find an expression for the derivative of 
