Graph the line.3x + 4y = 20
A. 
B. 
C. 
D. 
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 up on (0, ?); concave down on (-?, 0) B. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0)
Write the equation of the line that has the given slope and passes through the given point. Write the equation in slope-intercept form.slope = -4.2; (4, 1.2)
A. y = -4.2x - 15.6 B. y = 4.2x + 18 C. y = -4.2x + 18 D. y = 4.2x - 18
Provide an appropriate response.Divide: 
A. 7x + 9y B. 5x + 7y C. 7x - 9y D. 5x - 7y
Simplify the expression. Assume that variables represent nonzero numbers.(-5a)3
A. -15a3 B. -15a C. -125a3 D. -125a