Provide an appropriate response.
Find the standard deviation for the scores:21 32 28 25 23
30 26 28 27 28
A. 3.06
B. 26.8
C. 10.4
D. 3.22
Answer: D
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Solve the problem.A model of a pyramid has a square base 450 cm on a side and a height of 
Find the volume.
A. 34,000,000 cm3 B. 11,000,000 cm3 C. 11,500,000 cm3 D. 9,500,000 cm3
Solve the linear equation using the addition property of equality.-5y - 1 = 12 - 6y
A. y = -13 B. y = 13 C. y = 11 D. y = -11
The volume of a right-circular cylinder of radius r and height h is 
.
?
Suppose the radius and height of the cylinder are changing with respect to time t. At a certain instant of time, the radius and height of the cylinder are 2 and 3 in. and are increasing at the rate of 0.5 and 0.4 in./sec, respectively.
?
How fast is the volume of the cylinder increasing?
What will be an ideal response?
Give the interval where the function increases or decreases, as requested.f(x) = 5x2 - 4increases
A. (-?, 0] B. [-4/5, ?) C. (-?, -4/5) D. (0, ?)