Find the indicated cross product.v = -6i + 2j, w = 2i - 4kFind w × v.
A. 4i - 8j + 8k
B. 8j + 12k
C. 8i + 24j + 4k
D. -24i - 8j + 4k
Answer: C
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Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y2 - x - 25 = 0
A. origin B. x-axis C. y-axis D. x-axis, y-axis, origin E. none
Solve. If necessary, round to the nearest tenth.A flagpole casts a shadow of 34 feet. Nearby, a 7-foot tree casts a shadow of 5 feet. What is the height of the flagpole?
A. 24.3 ft B. 1,190 ft C. 1 ft D. 47.6 ft
Solve the problem.A sample of 400 g of lead-210 decays to polonium-210 according to the function given by 
where t is time in years. What is the amount of the sample after 30 years (to the nearest g)?
A. 83 g B. 111 g C. 1045 g D. 153 g
Solve the inequality, then graph the solution.2(x - 2) - 16x < -6(2x + 7) - 3x
A. (-38, ?)
B. (-?, 38)
C. (38, ?)
D. (-?, -38)