Solve.2x3 + 36 ? 5x2 + 21x
A. [-3, 4]
B. (-?, -3] ? 
C. [-3, ?)
D. 
? [4, ?)
Answer: B
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Find an equation in the form y = Acos x or y = Asin x that represents the given graph.
A. y = -2sin x B. y = -2cos x C. y = 2sin x D. y = 2cos x
Work the application. Write a legend and an equation. Solve the equation and answer in a complete sentence.The population of Greenwood County is 893,524. The population of Broselow County is 299,875. The population of Onslow County is 137,695. How much greater is the population of Greenwood County than Onslow County?
A. Let x = how much greater the population of Greenwood County is than that of Onslow County. 893,524 + 137,695 = x The population of Greenwood County is 593,649 greater than that of Onslow County. B. Let x = how much greater the population of Greenwood County is than that of Onslow County. 893,524 = 137,695 + x The population of Greenwood County is 755,929 greater than that of Onslow County. C. Let x = how much greater the population of Greenwood County is than that of Onslow County. 893,524 = 137,695 + x The population of Greenwood County is 755,829 greater than that of Onslow County. D. Let x = how much greater the population of Greenwood County is than that of Onslow County. 893,524 + 137,695 = x The population of Greenwood County is 592,649 greater than that of Onslow County.
Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.[8(cos 30° + i sin 30°)][3(cos 90° + i sin 90°)]
A. -1.0000 + 1.7321i B. -0.5000 + 0.8660i C. -5.5000 + 9.5263i D. -12.000 + 20.7846i
Solve the problem.For a certain drug, the rate of reaction in appropriate units is given by 
where t is measured in hours after the drug is administered. Find the total reaction to the drug from 
to 
A. 7.26 B. 21.86 C. 21.89 D. 10.95