Solve the problem.In a school survey, students showed these preferences for instructional materials. Answer the question. 
About how many students would you expect to prefer computers in a school of 350 students?
A. About 70 students
B. About 126 students
C. About 63 students
D. About 36 students
Answer: B
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Find the domain and the range of the functions or relations from the graph.
A. domain: (-?, ?); range: (0, ?) B. domain: (-?, 0); range: (-?, 0) C. domain: (-?, ?); range: (-?, ?) D. domain: (0, ?); range: (0, ?)
Solve the equation.
= 
+ 2
A. {30} B. {60} C. {-30} D. {-60}
Find the limit.
A. 0
B. 
C. 11
D. -9
Find the center, foci, and vertices of the ellipse.4x2 + 16y2 = 64
A. center at (0, 0)
foci at (-4, 0) and (4, 0)
vertices at (-16, 0), (16, 0)
B. center at (0, 0)
foci at (0, -2) and (0, 2)
vertices at (0, -4), (0, 4)
C. center at (0, 0)
foci at (0, - 2
) and (0, 2
)
vertices at (0, -4), (0, 4)
D. center at (0, 0)
foci at (- 2
, 0) and (2
, 0)
vertices at (-4, 0), (4, 0)