Find the indicated intersection or union.{3, 7, 14, 19, 21} ? {7, 19, 21, 27}
A. {3, 7, 19, 21}
B. {7, 19, 21, 27}
C. {7, 19, 21}
D. {3, 7, 14, 19, 21, 27}
Answer: C
Mathematics
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Express the number in exponential form.4.80(cos -33.3° + j sin -33.3° )
A. -33.3e4.80j B. 4.80e-33.3j C. 4.80e5.70j D. 5.70e4.80j
Mathematics
Solve the problem.If f(x) = 
, g(x) = 
, and h(x) = 2x+ 8, find h(g(f(x))).
A. 
B. 
+ 8
C. 
+ 4
D. 2
+ 8
Mathematics
Find the requested number.A number decreased by 4 is -14. What is the number?
A. 18 B. 10 C. -10 D. -18
Mathematics
Plot the point in the xy-plane. Tell in which quadrant or on what axis the point lies.(0, 4) 
A. 
Quadrant II
B. 
y-axis
C. 
y-axis
D. 
x-axis
Mathematics