Find the directrices of the ellipse.x2 + 144y2 = 144
A. y = ± 
B. y = ± 
C. x = ± 
D. x = ± 
Answer: C
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Multiply.
2
A. s2 - 10st + 25t2
B. s2 - 
st + 
t2
C. s2 - 
st + 
t2
D. s2 - 
st + 
t2
Solve the right triangle shown in the figure. 
?A = 30°, 
= 24 cm, ?C = 90°
A. ?B = 60°, 
= 6
cm, 
= 12 cm
B. ?B = 60°, 
= 12 cm, 
= 12
cm
C. ?B = 60°, 
= 12
cm, 
= 12 cm
D. ?B = 60°, 
= 12 cm, 
= 6
cm
Answer the question about the given function.Given the function f(x) = 
, is the point (2, 
) on the graph of f?
A. Yes B. No
Solve the problem.A job pays a salary of 27,000 the first year. During the next 9 years, the salary increases by 5% each year. What is the salary for the 10th year? What is the total salary over the 10-year period? (Round to the nearest cent.)
A. $41,885.86; $339,603.10 B. $43,980.15; $383,583.25 C. $41,885.86; $297,717.24 D. $43,980.15; $297,737.24