Evaluate the expression for the given value or values of the variables.8x - 4(x + 2); x = -5
A. -28
B. -23
C. -42
D. -31
Answer: A
Mathematics
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Evaluate the integral. 
A. -2sin-1
- x2
+ C
B. 4 sin-1
- 
+ C
C. 4 sin-1
- x
+ C
D. 
- 2 ln
+ C
Mathematics
Estimate the probability of an event (empirical probability). You toss two fair coins 20 times and obtain the following results for the number of tails.
Estimate the probability that when the two coins are tossed exactly one will be tails.
A. 
B. 
C. 
D. 
Mathematics
Use a half-angle formula to find the exact value of the expression.sin 105°
A. 
B. - 
C. - 
D. 
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics