Solve the problem.A certain noise produces 
of power. What is the decibel level of this noise (to nearest decibel)? Use the formula 
where 
A. 184 decibels
B. 70 decibels
C. 8 decibels
D. 80 decibels
Answer: D
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Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 
, y = 0, x = 0, x = 9
A. 486? B. 18? C. 972? D. 324?
Solve the polynomial inequality. Express the solution using interval notation.x3 - 9x2 > 0
A. (-?, 9) B. (9, ?) C. (0, 9) D. (-?, 0) ? (9, ?)
Use the substitution formula to evaluate the integral.
A. -9 B. 9 C. 18 D. 36
Solve the problem.To produce a calculator, Cal Industries signed a note on April 2 for $86,400, due in 120 days at 14% interest. On May 5 they made a payment of $20,000, and on June 1 another of $25,000. Find the amount due on the maturity date and the interest charged.
A. $45,112.15, $3652.15 B. $44,624.45, $3164.45 C. $44,226.05, $2826.05 D. $43,914.25, $2514.25