Write a general formula to describe the variation.The surface area S of a right circular cone varies directly as the radius r times the square root of the sum of the squares of the base radius r and the height h. The constant of proportionality is ?.
A. S = ?r
B. S = ?r
C. S = ?
D. S = ?r
Answer: A
Mathematics
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Graph the polar equation.r = ?, ? ? 0 
A. 
B. 
C. 
D. 
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Predict the general, or nth term, an, of the sequence.ln e4, ln e5, ln e6, ln e7, ln e8, . . .
A. ln en + 3, or n + 3 B. ln en+1, or n + 1 C. ln en - 3, or n - 3 D. ln en, or n
Mathematics
Factor the trinomial.z2 - 2z - 80
A. (z + 8)(z - 10) B. (z - 80)(z + 1) C. (z - 8)(z + 10) D. (z - 8)(z - 10)
Mathematics
Determine i) the domain of the function, ii) the range of the function, iii) the domain of the inverse, and iv) the range of the inverse.f(x) = 
A. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
B. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
C. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
D. f(x): D is all real numbers, R is all real numbers;
f-1(x): D is all real numbers, R is all real numbers
Mathematics