Find the exact value of y, or state that y is undefined.y = tan-1(-
)
A. - 
B. - 
C. 
D. 
Answer: A
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Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from the horizontal, and that the projectile is launched from the origin over a horizontal surfaceA baseball is hit when it is 2.1 ft above the ground. It leaves the bat with an initial velocity of 
at a launch angle of 21°. At the instant the ball is hit, an instantaneous gust of wind blows against the ball, adding a component of -14.4i (ft/sec) to the ball's initial velocity. How high does the baseball go? Round your answer to the nearest tenth.
A. 48.4 ft B. 40.7 ft C. 38.7 ft D. 36.6 ft
Find the equation of the line described, and express your answer in the specified form.Perpendicular to the line 2x - y = 5; passes through the point (0, 
); standard form
A. y = - 
x + 5
B. y = - 
x + 
C. y = 2
D. y = 
x + 
Multiply.(2 + 4i)(6 + 7i)
A. 28i2 + 38i + 12 B. -16 - 38i C. -16 + 38i D. 40 + 10i
Solve the equation.logx 49 = - 2
A. 
B. 
C. 
D. 