The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 4, y = -9
A. r = 
B. r = 
C. r = 
D. r = 
Answer: D
Mathematics
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Calculate the derivative of the function. Then find the value of the derivative as specified.
? =2 if r = 
A. 
= 
; 
? =2
= 
B. 
= - 
; 
? =2
= - 
C. 
= - 
; 
? =2
= - 
D. 
= 
; 
? =2
= 
Mathematics
Evaluate the absolute value.|23|
A. 0 B. 46 C. -23 D. 23
Mathematics
Determine the x- and y-intercepts on the graph of the equation.y = -7x
A. x-intercept is 1; y-intercept is 7 B. x-intercept is 0; y-intercept is 0 C. x-intercept is 0; y-intercept is -7 D. x-intercept is -7; y-intercept is 0
Mathematics
Evaluate the algebraic expression for the given value(s).8x, given x = 4
A. 32 B. 8 C. 12 D. 4
Mathematics