Solve the equation.- 
k = - 
A. k = -2
B. k = 0
C. k = 4
D. k = 1
Answer: C
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0) B. Local minimum at x = 0; local maximum at x = 2; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0)
Change to decimal numbers.
A. 0.75 B. 0.8 C. 0.6 D. 0.075
Factor the four-term polynomial by grouping.4x + 40 + xy + 10y
A. (x + 10y)(4 + y) B. (x + 10)(4 + y) C. (y + 10)(x + 4) D. (y + 10)(4x + y)
Solve the problem.The time, in seconds, that it takes an object to fall a distance d, in feet, is given by the algebraic expression 
. Find how long it will take a ball dropped from the top of a building 
tall to hit the ground. Write the answer in simplified radical form.
A. 
seconds
B. 
seconds
C. 
seconds
D. 
seconds