Solve the equation.
= 5 - 2x
A. 
B. 
C. 
D. {5}
Answer: B
Mathematics
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Find the inverse of the function.f(x) = 
A. f-1(x) = 
+ 8, x ? 0
B. f-1(x) = 
C. f-1(x) = 
2, x ? 0
D. f-1(x) = 
, x ? 0
Mathematics
Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = -8i - 4i + 4k, v = 0
A. 0; -8i - 4i + 4k
B. 0; no direction
C. 0; 
(-8i - 4i + 4k)
D. 4
; 
(-8i - 4i + 4k)
Mathematics
If possible, find the slope of the line passing through the two points.(8, -9), (8, 7)
A. - 
B. 0
C. - 
D. undefined
Mathematics
Solve by the quadratic formula. If there are no real roots, say so.3x2 = -4x - 9
A. No real solution
B. x = 
± 
C. x = - 
± 
D. 
Mathematics