Use the position function  to find the velocity in feet/second at time  seconds. The velocity at time

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?

A. 16 feet/second
B. 32 feet/second
C. 0 feet/second
D. 64 feet/second
E. limit does not exist

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Answer: B

Mathematics

Replace the polar equation with an equivalent Cartesian equation.r = 8 cot ? csc ?

A. y² = 8x
B. y = 8x² 
C. y = 
D. y = 8x

Refer to the following normal curve, with mean ? and standard deviation ?. If the standardized value of x is 0.5, then x =

A. 120. B. 137. C. 100. D. 80. E. none of these

Find the graph that matches the given system of equations.3x + 4y = 7

A.

B.

C.

D.

Provide an appropriate response.A prediction made by early psychology relating the magnitude of a stimulus x to the magnitude of a response y is expressed by the equation y = kx2, where k is a constant of the experiment. In an experiment on noise levels,  Use a graphing calculator to graph the equation.

What will be an ideal response?