Solve the quadratic inequality. Write the solution set in interval notation.x2 - 3x - 28 ? 0
A. (-?, -4] ? [7, ?)
B. [7, ?)
C. (-?, -4]
D. [-4, 7]
Answer: D
Mathematics
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Find 
and 
.f(x, y) = 
A. 
= - 
; 
= - 
B. 
= - 
; 
= - 
C. 
= - 
; 
= - 
D. 
= 
; 
= 
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Order the rational numbers from least to greatest.
, 
, 
A. 
, 
, 
B. 
, 
, 
C. 
, 
, 
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Determine the given complex number raised to a power and write the answer in rectangular form.(cos 30° + i sin 30°)12
A. -1 B. i C. 1 D. -i
Mathematics
Identify the graph of
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics