Solve the problem.If f(x) = -6x + 5 and g(x) = 2x + 9, find g(f(x)).
A. 12x + 19
B. -12x + 59
C. -12x - 1
D. -12x + 19
Answer: D
Mathematics
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Find the conjugate of each complex number.-3j
A. -3 B. 3j C. No conjugate. D. 3
Mathematics
Find the exact solutions to the quadratic equation, using a method of your choice.0.1x2 - 0.2x - 0.9 = 0
A. 2 ± 
B. 2 - 
C. 1 ± 
D. 1 + 
Mathematics
Give the additive inverse of the number.- 
A. - 
B. 7
C. 0
D. 
Mathematics
Solve the problem.Tides go up and down in a 14.8-hour period. The average depth of a certain river is 12 m and ranges from 8 to 16 m. The variation can be approximated by a sine curve. Write an equation that gives the approximate variation y, if x is the number of hours after midnight and high tide occurs at 9:00 am.
A. y = 4 sin 
+ 12
B. y = 4 sin 
+ 12
C. y = 12 sin 
+ 4
D. y = 12 sin 
+ 4
Mathematics