Find a polar equation for the conic. A focus is at the pole.e = 1; directrix is parallel to the polar axis 1 above the pole
A. r = 
B. r = 
C. r = 
D. r = 
Answer: A
Mathematics
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Solve the problem.Suppose f(x) = 30.2 + 1.3 log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 609 meters.
A. 82.82 B. -26.58 C. 33.82 D. 85.42
Mathematics
Find the LCM of the given polynomials.3x - 9, x2 - 3x
A. 3x2 - 9 B. 3x(x - 3) C. 3x - 3 D. 3x2 - 3
Mathematics
Graph the inequality.y ? -5x + 3
A. 
B. 
C. 
D. 
Mathematics
Complete the identity.csc (? - ?) = ?
A. 
B. csc ? - csc ?
C. csc ? sec ? - sec ? csc ?
D. 
Mathematics