Find the intervals on which the function is increasing and the intervals on which the function is decreasing.f(x) = x2 - 10x + 9
A. Increasing on (5, ?); decreasing on (-?, 5)
B. Increasing on (- 5, ?); decreasing on (-?, -5)
C. Increasing on (-?, - 5); decreasing on (-5, ?)
D. Increasing on (-?, 5); decreasing on (5, ?)
Answer: A
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At the given point, find the line that is normal to the curve at the given point.4x2y - ? cos y = 5?, normal at (1, ?)
A. y = 
x - 
+ ?
B. y = 
x - 
+ ?
C. y = - 
x + 
+ ?
D. y = -2?x + 3?
Provide an appropriate response.Divide the fractions and reduce: 
÷ 
A. 
B. 
C. 1
D. 
Solve the problem.The foundation for a cylindrical water tank is a cylinder 16 m in diameter and 3 m high. The formula for determining the volume of a cylinder is V = ?r2h. How many cubic m of concrete are needed to build the foundation? Use 3.14 for ?. Round your answer to the nearest tenth if necessary.
A. 301.4 m3 B. 1205.8 m3 C. 602.9 m3 D. 2411.5 m3
Solve the problem.The distance an object falls when dropped from a tower varies directly as the square of the time it falls. If the object falls 144 feet in 3 seconds, how far will it fall in 14 seconds?
A. 224 ft B. 3528 ft C. 3136 ft D. 2744 ft