Solve the problem.A ball is thrown vertically upward from the ground at a velocity of 108 feet per second. Its distance from the ground after t seconds is given by 
How fast is the ball moving 2 seconds after being thrown?
A. 152 ft per sec
B. 44 ft per sec
C. 76 ft per sec
D. 38 ft per sec
Answer: B
Mathematics
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Plot the point whose polar coordinates are given.(-4, 2?/3)
A. 
B. 
C. 
D. 
Mathematics
Plot the point given in polar coordinates.(2, 0°) 
A. 
B. 
C. 
D. 
Mathematics
Write the complex number in rectangular form.7(cos 
+ i sin 
)
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
Mathematics
Simplify.81 ÷ (-9) + (-9)
A. -18 B. -27 C. 18 D. 0
Mathematics