Use the trigonometric substitution u = a sin ?, where - ?/2 < ?< ?/2 and a> 0 to simplify the expression 
.
?
A. ?a csc ?
B. ?a sin ?
C. ?a tan ?
D. ?a cos ?
E. ?- a cos ?
Answer: D
Mathematics
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Decide whether the figure is convex or concave.
A. Concave B. Convex
Mathematics
Graph the exponential function using transformations where appropriate.f(x) = 3x + 4
A. 
B. 
C. 
D. 
Mathematics
Combine the following, if possible.
- 3
- 3
A. -22
B. -108
C. 22
D. 33
Mathematics
Simplify.(2
+ 6
)(3
+ 9
)
A. 6
+ 54
B. 288 + 36
C. -252 + 36
D. 6
+ 54
+ 36
Mathematics