Solve by the substitution method.x + 4y = 272x + 3y = 24
A. {(-3, 7)}
B. {(3, 6)}
C. {(2, 7)}
D. ?
Answer: B
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Determine convergence or divergence of the series.
A. Diverges B. Converges
Multiply the expressions.(7x + 2y)(7x - 2y)
A. 49x2 + 28xy - 4y2 B. 49x2 - 4y2 C. 7x2 - 2y2 D. 49x2 - 28xy - 4y2
Simplify the expression without a calculator.
A) 13
B) 14
C) 15
D) 10
E) 9
Find the center, transverse axis, vertices, foci, and asymptotes of the hyperbola.
- 
= 1
A. center: (-2, 4)
transverse axis is parallel to x-axis
vertices: (-2, -1) and (-2, 9)
foci: (-2, 4 - 
) and (-2, 4 + 
)
asymptotes of y + 4 = - 
(x - 2) and y + 4 = 
(x - 2)
B. center: (2, -4)
transverse axis is parallel to y-axis
vertices: (2, -4 - 
) and (2, -4 + 
);
foci: (2, -9) and (2, 1)
asymptotes of y + 4 = - 
(x - 2) and y + 4 = 
(x - 2)
C. center: (2, -4)
transverse axis is parallel to y-axis
vertices: (2, -9) and (2, 1)
foci: (2, -4 - 
) and (2, -4 + 
)
asymptotes of y + 4 = - 
(x - 2) and y + 4 = 
(x - 2)
D. center: (2, -4)
transverse axis is parallel to y-axis
vertices: (9, -8) and (3, 2)
foci: (9, -3 - 
) and (3, -3 + 
)
asymptotes of y + 4 = - 
(x - 2) and y + 4 = 
(x - 2)