Use your calculator to approximate the integral using the method indicated, with n = 100. Round your answer to four decimal places.
dx (Simpson's rule)
A. 3.0436
B. 2.9569
C. 3.0159
D. 2.9438
Answer: D
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Solve the problem.A salesperson has a base salary of $1500 plus a 8% commission on her sales.a) Write a linear equation that gives her salary, y, in terms of her sales, x.b) Using the equation found in part a, find how much the salesperson earns if the sales are $38,000.c) If the earnings are $5420, then how much were the sales?
A. y = 1500 + 0.08x; $4540; 48,000 B. y = 1500 + 0.08x; $4540; 50,000 C. y = 1500 + 0.08x; $4540; 49,000 D. y = 1500 - 0.08x; $4540; 51,000
Graph the parabola.y = 5x2
A. 
B. 
C. 
D. 
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = e2x + 32x + y = 3
A. (0.75, 4.50) B. (-0.75, 4.50) C. (-0.75, -4.50) D. (0.75, -4.50)
Determine the vertex, focus, and directrix of the parabola and sketch its graph.y2 - 12y + 8x = -60
A. vertex: (6, -3)
focus: (6, -5)
directrix: y = -1
B. vertex: (6, -3)
focus: (6, -1)
directrix: y = -5
C. vertex: (-3, 6)
focus: (-1, 6)
directrix: x = -5
D. vertex: (-3, 6)
focus: (-5, 6)
directrix: x = -1