Determine whether the given function satisfies Laplace's equation.f(x, y) = cos (x) sin (-y)
A. Yes
B. No
Answer: B
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Multiply.× 
A. 2.425 B. 0.02425 C. 0.0002425 D. 0.002425
Solve the problem.A comet follows the hyperbolic path described by 
where x and y are in millions of miles. If the sun is the focus of the path, how close to the sun is the vertex of the path?
A. 12 million mi B. 3.2 million mi C. 3.7 million mi D. 0.3 million mi
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.A foul tip of a baseball is hit straight upward from a height of 4 feet with an initial velocity of 
per second. The function 
+ 4 describes the ball's height above the ground, s(t), in feet, t seconds after it was hit. The ball reaches its maximum height above the ground when the instantaneous speed reaches zero. After how many seconds does the ball reach its maximum height?
A. 
B. 112
C. 7
D. 