Solve using Cramer's Rule.The sum of a student's three scores is 230. If the first is 22 points more than the second, and the sum of the first two is 14 more than twice the third, what was the first score?
A. 90
B. 50
C. 72
D. 68
Answer: A
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Express the indicated derivative in terms of the function F(x). Assume that F is differentiable.Dx(F(5x))
A. F'(5x) B. 5F'(x) C. 4F'(5x) D. 5F'(5x)
Factor the polynomial completely.t3 + 216
A. (t + 6)(t2 - 6t + 36) B. (t - 216)(t2 - 1) C. (t + 6)(t2 + 36) D. (t - 6)(t2 + 6t + 36)
Solve the problem.If (a, 3) is a point on the graph of y = 2x - 5, what is a?
A. 1 B. -4 C. -1 D. 4
Solve the equation in the complex number system.x5 - 1 = 0
A. 1, cos(36°) + i sin(36°), cos(108°) + i sin(108°), cos(180°)+ i sin(180°), cos(252°) + i sin(252°) B. -1, cos(72°)+ i sin(72°), cos(144°) + i sin(144°), cos(216°) + i sin(216°), cos(288°) + i sin(288°) C. 1, cos(72°) + i sin(72°), cos(144°) + i sin(144°), cos(216°) + i sin(216°),-1 D. 1, cos(72°)+ i sin(72°), cos(144°) + i sin(144°), cos(216°) + i sin(216°), cos(288°) + i sin(288°)