Match the system of equations with one of the graphs.y2 - 15y = x - 2xy = 7
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the derivative.s = t6 cos t - 12t sin t - 12 cos t
A. 
= - t6 sin t + 6t5 cos t - 12t cos t
B. 
= - t6 sin t + 6t5 cos t - 12t cos t - 24 sin t
C. 
= - 6t5 sin t - 12 cos t + 12 sin t
D. 
= t6 sin t - 6t5 cos t + 12t cos t
Mathematics
Solve the problem.At a lumber company, shelves are sold in 4 types of wood, 3 different widths and 3 different lengths. How many different types of shelves could be ordered?
A. 10 B. 36 C. 48 D. 21
Mathematics
Determine the vertex of the graph of the parabola.y = x2 - 1
A. (-1, 0) B. (1, 0) C. (0, 1) D. (0, -1)
Mathematics
Find an equation of the line with the given slope that passes through the given point. Write the equation in the form 
m = - 
; (4, 3)
A. 7x + 9y = 55 B. 9x + 7y = -55 C. 7x - 9y = 55 D. 7x + 9y = -55
Mathematics