Simplify the expression. Assume that all variables are positive when they appear.
A. 3x9
B. -3x27
C. -3x9
D. -3x24
Answer: C
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and 
. For what ?x value does the point
?
A. 
B. 
C. 
D. 
Find the value of the trigonometric function.sin 22.4°
A. 0.381 B. 0.412 C. -0.398 D. 0.925
Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.sin 2x + sin x = 0
A. 
, 
, 
, 
B. 
, 
C. 0, 
, ?, 
D. No solution
Solve the problem.Find the sum of the arithmetic progression: 4 + 10 + 16 + . . . + 112
A. 1102 B. 1106 C. 1094 D. 1110