Solve the system of equations. [Hint: Let u = 
and v = 
, and solve for u and v. Then let x = 
, and y = 
.]
A. x = -8, y = 
; 
B. x = 
, y = -8; 
C. x = 
, y = - 
; 
D. x = - 
, y = 
; 
Answer: B
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Find the domain, the range, and any intercepts.
A. domain: (-?, ?); range: (-?, 9]; intercepts: (0, 8), (-2, 0), (4, 0) B. domain: (-?, ?); range: (-?, 9]; intercepts: (8, 0), (0, -2), (0, 4) C. domain: (-?, ?); range: (-?, 9); intercepts: (0, 8), (-2, 0), (4, 0) D. domain: (-?, 9]; range: (-?, ?); intercepts: (0, 8), (-2, 0), (4, 0)
Determine if the sequence is geometric. If the sequence is geometric, find the common ratio.6, 
, 
, 
, . . .
A. yes, 
B. yes, 
C. yes, 
D. no
Make the indicated temperature conversion. Round answers to one decimal place if necessary.Convert 91.6°C to Fahrenheit.
A. 82.9°F B. 196.9°F C. 18.9°F D. 132.9°F
Factor the trinomial completely.
A. 
B. 
C. 
D. 
E. not factorable