Solve the equation.Let f(x) = 
+ 4. Find all x for which f(x) = 16.
A. ?
B. {-20, 20}
C. {-12, 20}
D. {-12, 12}
Answer: D
Mathematics
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Find the unit tangent vector of the given curve.r(t) = 12t5i - 4t5j + 3t5k
A. T = 
i + 
j + 
k
B. T = 
i - 
j - 
k
C. T = 
i - 
j + 
k
D. T = 
i - 
j + 
k
Mathematics
Use the shell method to find the volume of the solid generated by revolving the shaded region about the indicated axis.About the y-axisx = 3
A. 
?
B. 
?
C. 12?
D. 
?
Mathematics
Find the slope and y-intercept of the line.9x - 2y = 5
A. slope = 9; y-intercept = 5
B. slope = 
; y-intercept = 
C. slope = 
; y-intercept = - 
D. slope = 
; y-intercept = 
Mathematics
Evaluate the expression using the given values.
xy2; x = -5
, y = 
A. - 
B. - 
C. - 
D. - 
Mathematics