Use the zero-factor property to solve the equation.3x2 + x - 44 = 0
A. 
B. 
C. 
D. 
Answer: B
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Use the decibel scale to answer the question.How much louder (more intense) is a 57-dB sound than a 40-dB sound?
A. 238 times as loud B. 50 times as loud C. 25,118,864 times as loud D. 1.4 times as loud
Use the laws of exponents to simplify. Write the answer with positive exponents.(b2)3/2
A. b1/2 B. b5/2 C. b3 D. b3/4
Find the equation of the tangent line to the curve when x has the given value.f(x) = x2 + 5x ; x = 4
A. y = -39x - 80
B. y = 
+ 
C. y = 13x - 16
D. y = - 
+ 
A merchant plans to sell two models of MP3 players at prices of $225 and $250. The $225 model yields a profit of $30 per unit and the $250 model yields a profit of $31 per unit. The merchant estimates that the total monthly demand will not exceed 280units. The merchant does not want to invest more than $55,776 in inventory for these products. What is the optimal inventory level for each model? What is the optimal profit? ?
A. 231 units of the $225 model49 units of the $250 modelOptimal profit: $8,449 B. 225 units of the $225 model30 units of the $250 modelOptimal profit: $7,680 C. 250 units of the $225 model31 units of the $250 modelOptimal profit: $8,461 D. 275 units of the $225 model30 units of the $250 modelOptimal profit: $9,180 E. 275 units of the $225 model31 units of the $250 modelOptimal profit: $9,211