Find the rate of change. Use appropriate units.The line graph represents the gallons of water in a swimming pool after x hours. There is a pump that can either add or remove water from the pool. Find the rate of change from (2, 413) to 
A. 0 gallons per hour
B. 1 gallon per hour
C. -1 gallon per hour
D. 2 gallons per hour
Answer: A
Mathematics
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Simplify the complex fraction. Leave the answer in factored form when appropriate. 
A. 
B. 
C. 
D. 4
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Multiply.(0.5x5)(-0.3x2)
A. -0.15x10 B. -0.15x7 C. 0.15x10 D. 0.15x7
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Classify the angle as acute, right, obtuse, or straight.35°
A. straight B. right C. acute D. obtuse
Mathematics
If s denotes the length of the arc of a circle of radius r subtended by a central angle ?, find the missing quantity.r = 
feet, s = 7 feet, ? = ?
A. 
°
B. 
radians
C. 21 radians
D. 21°
Mathematics