Perform the indicated operation. 
? 4
A. 
B. 
C. 16
D. 
Answer: B
Mathematics
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Find the domain and range of the function.f(x) = 5 - x2
A. D: (-?, ?), R: (-?, 5] B. D: (-?, ?), R: [5, ?) C. D: (-?, ?), R: (-?, ?) D. D: (-?, 5], R: (-?, ?)
Mathematics
Solve the given equation for x.y = 8 cos 3x
A. x = 
cos-1 
B. x = 
cos-1 
C. x = 8 cos-1 
D. x = 3 cos-1 
Mathematics
Factor out the largest possible common factor.72x9y9 - 80x5y5 - 48x2y3
A. 8(9x9y9 - 10x5y5 - 6x2y3) B. 8x2y3(9x7y6 - 10x3y2 - 6) C. 8x2(9x7y9 - 10x3y5 - 6y3) D. -8x2y3(-9x7y6 - 10x3y2 + 6)
Mathematics
Solve the radical equation. Check all proposed solutions.
= y + 4
A. y = 1 B. y = 9 C. y = 5 D. y = -5
Mathematics