Write a linear inequality that describes the shaded region.
A. y ? -x + 1
B. y ? 2x + 2
C. y ? 2x + 2
D. y ? x - 1
Answer: B
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Find the equation of the tangent plane (or tangent "hyperplane" for a function of three variables) at the given point p.f(x, y, z) = x2 + y2 + xyz, p = (-3, -4, 0)
A. w = -6x - 8y + 25 B. w = -6x - 8y - 25 C. w = -6x - 8y + 12z + 25 D. w = -6x - 8y + 12z - 25
Perform all operations in correct order.42 + 22
A. 24 B. 36 C. 20 D. 12
Solve the equation for solutions in the interval [0, 2?).cos 2x = 
- cos 2x
A. 
B. 
C. ?
D. 
Solve the problem.Jon has 791 points in his math class. He must have 72% of the 1200 points possible by the end of the term to receive credit for the class. What is the minimum number of additional points he must earn by the end of the term to receive credit for the class?
A. 73 points B. 864 points C. 409 points D. 570 points