Perform the indicated operations.( 5x2 + 2xy - 3y2 + 9) - ( 7x2 + 3xy + 5y2 - 7)
A. 15x2y2 + 16
B. 2x2 - xy - 7y2 + 15
C. -2x2 + xy + 2y2 - 2
D. -2x2 - xy - 8y2 + 16
Answer: D
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Solve.In 1996, an outbreak of a disease infected 17 people in a large community. By 1997, the number of those infected had grown to 29. Find an exponential growth function that fits the data. (Round decimals to three places.)
A. N(t) = 17e0.534t, where t is the number of years after 1997. B. N(t) = 17e5.34t, where t is the number of years after 1996. C. N(t) = 17e0.534t, where t is the number of years after 1996. D. N(t) = 17e5.34t, where t is the number of years after 1997.
Solve the equation.
- 
= 3
A. 45 B. -90 C. 90 D. -45
Solve the problem.Let D be the region bounded below by the cone 
and above by the sphere 
. Set up the triple integral in cylindrical coordinates that gives the volume of using the order of integration 
.
A. 
B. 
C. 
D. 
Solve the problem.Steven has a balance of $293.87 on a credit card that has a 9.7% APR. The interest is compounded daily. If he does not charge any money to this account until after he receives the next bill (30 days), what will be his balance on the next bill?
A. $331.04 B. $296.22 C. $296.21 D. $4732.37