Write the conjugate 
of the complex number z. Then find z
.z = 
+ 4i
A. 
= 
- 4i, z
= -3
B. 
= 
- 4i, z
= 29
C. 
= 
- 4i, z
= 42
D. 
= 
- 4i, z
= 3
Answer: B
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Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Assume that x, y, z and b are positive numbers. Use the properties of logarithms to write the expression 
in terms of the logarithms of x, y, and z.
?
A. ?
B. ?
C. ?
D. ?
E. ?
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