Write an equation to describe the variation. Use k for the constant of proportionality.p varies jointly as q and the square of r.
A. p = k + q + r2
B. p + q + r2 = k
C. pqr2 = k
D. p = kqr2
Answer: D
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r cos ? = 9
A. x = 9 B. y = 9 C. 9y = 1 D. 9x = 1
Mathematics
Use implicit differentiation to find dy/dx and d2y/dx2.xy + 3 = y, at the point (4, -1)
A. 
= 3; 
= - 24
B. 
= - 
; 
= 0
C. 
= 
; 
= - 
D. 
= 
; 
= 
Mathematics
Find the requested characteristic.Graph f(t) = csc 
on the interval 
using dot mode. Identify where asymptotes occur in the graph.
A. t = ± ? and t = ± 2?
B. t = 0, t = ± 
, t = ± ?
C. t = ± 
and t = ± ?
D. t = 0, t = ± ?, t = ± 2?
Mathematics
Find the inverse, if it exists, of the given matrix.A = 
A. Does not exist
B. 
C. 
D. 
Mathematics