Express the graph shown using interval notation. Also express it as an inequality involving x.
A. [4, ?)
x ? 4
B. (-?, 4)
x < 4
C. (-?, 4]
x ? 4
D. (4, ?)
x > 4
Answer: D
Mathematics
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Solve the problem.An object of mass m is dropped from a helicopter. Assuming that air resistance is proportional to velocity, the velocity v of the object satisfies the equation 
Find velocity as a function of time.
A. v = 
(1 - e-kt/m)
B. v = 
- e-kt/m
C. v = 
(1 - ekt/m)
D. v = 
(1 - e-kt/m)
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Perform the operation.Multiply 18 by 52
A. 1036 B. 946 C. 926 D. 936
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Graph the quadratic equations.y = -x2 + 2x - 8
A. 
B. 
C. 
D. 
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Expand, where i2 = -1.(-1 + i
)3
A. 1 B. -1 - 3i C. 4 + 4i D. 8
Mathematics