Determine which purchase has the lower unit price.Brand A: 12 cans for $4.26Brand B: 20 cans for $6.26Brand C: 24 cans for $6.89Brand D: 36 cans for $10.70
A. Brand A
B. Brand C
C. Brand B
D. Brand D
Answer: B
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Find the exact value of the trigonometric expression without the use of a calculator.
A. -
B. -2
C. - 
D. - 
Solve the problem.After introducing an inhibitor into a culture of luminescent bacteria, a scientist monitors the luminosity produced by the culture. Use a graphing utility to fit a logarithmic function to the data. Round values to the nearest hundredth. Then, use the function to predict the luminosity, to the nearest hundredth, after 20 hours. 
A. y = 100.5 - 32.7 ln x; 2.54 B. y = 98.75 - 32.66 ln x; 0.91 C. y = 107.55 - 41 ln x; -15.27 D. y = 112.97 - 45.97 ln x; -24.74
Use the given values of the variable to make a vertical table of solutions for the equation.y - 5x = 0, y = -10, -5, 0, 10
A. 
B. 
C. 
D. 
Solve the problem.The total profit function P(x) for a company producing x thousand units is given by 
Find the values of x for which the company makes a profit. [Hint: The company makes a profit when 
A. x is less than 11 thousand units B. x is between 3 thousand units and 11 thousand units C. x is greater than 3 thousand units D. x is less than 3 thousand units or greater than 11 thousand units