Solve.2x3 + 18 ? 5x2 + 9x
A. [-2, 3]
B. [-2, ?)
C. (-?, -2] ? 
D. 
? [3, ?)
Answer: C
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When a skydiver jumps from an airplane his velocity V, in feet per second, increases toward a maximum of 175 feet per second. (This is terminal velocity.) The table below shows the difference 
between the terminal velocity and the velocity after t seconds.
t 0 5 10 15 D 175.00 97.72 54.57 30.47? A: Find an exponential model for the data. Be careful. The data are given in steps of 5 seconds. Round your answer to two decimal places, if necessery.B: Find a formula that gives the velocity V after t seconds. Round your answer to two decimal places, if necessery.C: Make a graph of V versus t over the first 10 seconds. Include the horizontal line representing the terminal velocity.E: According to the model, how long does it take for the skydiver to reach 92.00% of terminal velocity? Round your answer to two decimal places. What will be an ideal response?
Solve.A clothing company sells jackets for $240 per jacket. The company's fixed costs are $5000 and the variable costs are $230 per jacket. Use a graph to determine the break-even point for production.
A. (1000, 240,000) B. (500, 240,000) C. (500, 120,000) D. (1000, 120,000)
Graph the pair of parametric equations with the aid of a graphing calculator.x = 5 tan t, y = 3 sec t; -?/2 ? t ? ?/2 
A. 
B. 
C. 
D. 
Sketch a graph of f.f(x) = -4x2 + 3x
A. 
B. 
C. 
D. 