Find the foci of the ellipse.25x2 + 64y2 = 1600
A. (0, ±
)
B. (±8, 0)
C. (±
, 0)
D. (±5, 0)
Answer: C
Mathematics
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Choose the polar equation that matches the graph.
A. r = sin ? + sin2 ? B. r = ? cos ? C. r = ? sin ? D. r = cos ? + cos2 ?
Mathematics
Give an appropriate answer.Let
f(x) = -2 and 
g(x) = -7. Find
[f(x) + g(x)]2.
A. 5 B. 53 C. -9 D. 81
Mathematics
Evaluate without using a calculator.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve.Parts for an automobile repair cost $850. The mechanic charges $34 per hour. If you receive an estimate for at least $918 and at most $1054 for fixing the car, what is the time interval that the mechanic will be working on the job?
A. Between 1 hr and 6 hr B. Between 1 hr and 2 hr C. Between 27 hr and 31 hr D. Between 2 hr and 6 hr
Mathematics