Provide an appropriate response.A survey of residents in a certain town indicates 170 own a dehumidifier, 130 own a snow blower, and 80 own a dehumidifier and a snow blower. How many own a dehumidifier or a snow blower?
A. 170
B. 250
C. 80
D. 220
Answer: D
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Write the first four elements of the sequence. 
n
A. 
, 
, 
, 
B. 1, 
, 
, 
C. 
, - 
, 
, - 
D. 
, 
, 
, 
Find the standard divisor for the given situation. Round your answer to two decimals.A university has 21 scholarships to be apportioned among the engineering students based on the enrollment in each department. There are three departments - Mechanical Engineering (M), Electrical Engineering (E), and Civil Engineering (C). The number of students in each department is given in the following table. 
A. 37.95 B. 33.86 C. 35.38 D. 32.52
Add the given pair of complex numbers geometrically.z1 = 4 + 12i, z2 = -3i
A. 4 + 15i B. 4 + 36i C. 4 - 36i D. 4 + 9i
Simplify the expression.(18 + 10) ? (22 - 16)
A. 4.67 B. 34 C. 168 D. 600