Solve the problem.What is the intensity in Watts/m2 of a noise measured at 78 decibels? The level of sound intensity in decibels (dB) is 
where ? (beta) is the number of decibels, I is the sound intensity in W/m2, and 
(Round to the nearest decibel.)
A. 7.80 × 10-10 W/m2
B. 6.31 × 10-4 W/m2
C. 2.44 × 1015 W/m2
D. 6.31 × 10-5 W/m2
Answer: D
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Use the table to calculate the tax owed. Round to the nearest cent.
Married couple filing jointly with two dependent children Gross income: $94,000 Adjustments: none Deductions: $12,000 mortgage interest $2500 property taxes $5000 charitable contributions Tax credit: $2000
A. $3927.50 B. $6285.00 C. $4240.00 D. $8685.00
Find the center-radius form of the circle described or graphed.
A. (x - 2)2 + (y + 1)2 = 9 B. (x + 2)2 + (y - 1)2 = 9 C. (x + 2)2 + (y - 1)2 = 3 D. (x - 2)2 + (y + 1)2 = 3
Sketch the line with the given slope that passes through the indicated point.Slope = - 1; line passes through the point (-2, -4)
A. 
B. 
C. 
D. 