Match the differential equation with the appropriate slope field.y' = y(y + 2)( y - 2)
A. 
B. 
C. 
D. 
Answer: A
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Estimate the value of the quantity.A swimming pool has a leak. The leak is getting worse. The following table gives the leak rate every 6 hours.
Suppose it keeps leaking 6.8 gallons every 6 hours. After losing 3400 gallons the leak is fixed. Approximately how long did the leak last? Use the right endpoints to estimate the first 48 hours.
A. 34.65 hours B. 28.65 hours C. -83.60 hours D. 55.06 hours
Graph the polar equation.r cos ? = 3
A. 
B. 
C. 
D. 
Solve the problem.Sound levels in decibels can be computed by f(x) = 10log(x/So), where x is the intensity of the sound in watts per square meter and So = 1.00 x 10-12 watt/m2. A certain noise produces 9.89 x 10-5 watt/m2 of power. What is the decibel level of this noise? (Round to the nearest decibel)
A. 184 decibels B. 80 decibels C. 8 decibels D. 70 decibels
Find the future value of the annuity.Payments of $1000 at the end of each year for 7 years at 3% interest compounded annually
A. $3980.17 B. $7662.46 C. $6468.41 D. $40,995.80