Find an equivalent equation in polar coordinates.x = 8
A. r = 8 csc ?
B. r = 8 cos ?
C. r = 8 sec ?
D. r = 8 sin ?
Answer: C
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Decide whether or not the ordered pair is a solution of the equation.x - y = 9; (3,2)
A. Yes B. No
Solve.An earthquake was recorded with an intensity which was 
times as powerful as a reference level earthquake, or 
What is the magnitude of this earthquake on the Richter scale? The magnitude of an earthquake of intensity I is defined as 
, where Io is a minimum level for comparison.
A. 3.9 B. 0.49 C. 4.9 D. 11.3
Find the nth term an of the geometric sequence.1, 
, 13, 13
, . . .
A. an = 13n-1 B. an = 13n/2 C. an = 13(n+1)/2 D. an = 13(n-1)/2
Find percent notation for the number in decimal notation.0.12 of seniors at Elmwood High School spend more than two hours per day on the Internet.
A. 0.0012% B. 120% C. 12% D. 1.2%