Describe the graph of the polar equation.r2 = 36 rcos ? - 6r sin ? - 9
A. Parabola opening upward with vertex (36, -6)
B. Circle with radius 18 and center (18, -3)
C. Circle with radius 3 and center (36, -6)
D. Parabola opening to the right with vertex (36, -6)
Answer: B
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Find the quadrant that contains the terminal side of angle ?.sin ? < 0 and tan ? < 0
A. I B. II C. III D. IV
Solve the equation.-60 ÷ t = -15
A. -30 B. -4 C. 30 D. 4
Solve the problem.A building has an entry with the shape of a parabolic arch 100 ft high and 28 ft wide at the base. Find an equation for the parabola if the vertex is put at the origin of the coordinate system.A = 100 ftB = 28 ft
A. x2 = -2y B. y2 = -2x C. y2 = -7.8x D. x2 = -7.8y
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
+ 9
- 4
A. 26
B. -98
C. -26
D. 34