Find the foci of the ellipse.16(x + 1)2 + 9(y - 1)2 = 144
A. (-1, 5), (-1, -3)
B. (-1, 1 - 
), (-1, 1 + 
)
C. (1, -1 - 
), (1, -1 + 
)
D. (-1- 
, 1), (-1+ 
, 1)
Answer: B
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Provide an appropriate response.State University has seen an increase in the number of students majoring in Native American Studies. The graph below shows the number of students with this major for the past six years.
Use the graph to write six ordered pairs that represent the number of Native American Studies majors for the years shown. Is this relation a function?
A. {(1, 100), (2, 200), (3, 400), (4, 650), (5, 900), (6, 1050)}; yes B. {(100, 1), (200, 2), (400, 3), (650, 4), (900, 5), (1050, 6)}; yes C. {(100, 1), (200, 2), (400, 3), (650, 4), (900, 5), (1050, 6)}; no D. {(1, 100), (2, 200), (3, 400), (4, 650), (5, 900), (6, 1050)}; no
Give the center and radius of the circle. Then sketch its graph.(x - 1)2 + (y + 5)2 = 25
A. center (1, - 5), r = 5
B. center (1, 5), r = 5
C. center (- 1, 5), r = 5
D. center (- 1, - 5), r = 5
Use reference angles to find the exact value of the expression. Do not use a calculator.tan 750°
A. - 
B. 
C. 
D. 
Solve the equation on the interval [0, 2?).sin x - 2 sin x cos x = 0
A. 0, 
, ?, 
B. 
, 
C. 
, ?, 
, 2?
D. 
, 
, 2?