Identify the conic section that the polar equation represents. Describe the location of a directrix from the focus located at the pole.r = 
A. ellipse; The directrix is 
unit(s) below the pole at y = - 
.
B. ellipse; The directrix is 
unit(s) to the right of the pole at x = 
.
C. ellipse; The directrix is 
unit(s) above the pole at y = 
.
D. ellipse; The directrix is 
unit(s) to the left of the pole at x = - 
.
Answer: B
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Solve the problem.The driver of a car traveling at 48 ft/sec suddenly applies the brakes. The position of the car is 
t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop?
A. 24 sec B. 48 sec C. 8 sec D. 16 sec
Simplify.19 + 21 ? 27
A. 426 B. 586 C. 1080 D. 67
Solve by the substitution method.-7x + 99 = 6y3x - 2y = 15
A. {(8, 7)} B. {(9, 6)} C. {(x, y)|3x - 2y = 15} D. ?
Provide an appropriate response.Identify which of the following properties apply to the graph of 
I. The domain is all real numbers except integer multiples of ?. II. The range is [-1, 1] III. The equations of the vertical asymptotes are 
, where n is an odd integer. IV. The function obtains a relative maximum at x = 2n? where n is an integer.
A. I and II B. III and IV C. II and IV D. III only