Replace the polar equation with an equivalent Cartesian equation.r2 sin 2? = 24
A. y = 24x2
B. y = 
C. y = 12x
D. y = 
Answer: B
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Find the domain of the variable in the equation. Write the answer in interval notation.
= x + 14
A. (-?, -4) ? (8, ?) B. (-4, 8) ? (8, ?) C. (-?, -4) ? (-4, 8) ? (8, ?) D. (-?, 4) ? (4, 8) ? (8, ?)
Solve.A plane flies 430 miles with the wind and 310 miles against the wind in the same length of time. If the speed of the wind is 30 mph, what is the speed of the plane in still air?
A. 185 mph B. 175 mph C. 210 mph D. 190 mph
Find the vertices and graph the hyperbola.
- 
= 1
A. (0, -5), (0, 5)
B. (-5, 0), (5, 0)
C. (0, -
), (0, 
)
D. (0, -7), (0, 7)
Solve the problem.The temperature at the South pole was 7° at 8 am. At 3 pm, it was -41°. By how many degrees did the temperature drop?
A. -34° B. 48° C. 34° D. -48°