Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Answer: B
Mathematics
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Find the domain and range of the function.f(x) = 9 sin2 x
A. Domain: (-?, ?); range [-9, 9] B. Domain: [0, ?); range: [-9, 9] C. Domain: (-?, ?); range: [0, 9] D. Domain: [0, 9]; range: (-?, ?)
Mathematics
Solve.A $1500 diamond ring is on sale at 10% off. Find the sale price.
A. $150.00 B. $1485.00 C. $1350.00 D. $15.00
Mathematics
Fill in the blank with the correct inequality symbol.If 
x > - 
, then x _____ -4.
A. < B. ? C. > D. ?
Mathematics
In the previous three problems, the values of 
are
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. 
Mathematics