Find the specified domain and express it in interval notation.For f(x) = x2 - 81 and g(x) = 2x + 3, what is the domain of 
(x)?
A. 
? 
B. All real numbers
C. 
D. (-?, -9) ? (-9, 9) ? (9, ?)
Answer: D
Mathematics
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Solve the problem.Suppose you pay $2.00 to roll a fair die with the understanding that you will get back $6.00 for rolling a 1 or a 5, nothing otherwise. What are your expected winnings?
A. $0.00 B. -$2.00 C. $2.00 D. $6.00
Mathematics
Provide an appropriate response.Raise to the indicated power: 
3
A. 
B. 
C. 
D. 
Mathematics
Find 
. Write your answer in standard polar form with the argument in radians.z1 = 5(cos 200° + i sin 200°), z2 = 4(cos 50° + i sin 50°)
A. 
(cos 150° - i sin 150°)
B. 
(sin 150° + i cos 150°)
C. 
(cos 250° + i sin 250°)
D. 
(cos 150° + i sin 150°)
Mathematics
Solve and check.
= x - 3
A. 1, 6 B. 1, 13 C. 6 D. 6, 13
Mathematics