Use the properties of logarithms to rewrite the expression. Simplify the result if possible. Assume all variables represent positive real numbers.log12 
A. log12 n - log12 17 - 
log12 m
B. log12 17 + 
log12 m - log12 n
C. log12 17 + 
- log12 n
D. log12 17 ? 
÷ log12 n
Answer: B
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Write the number in scientific notation.The hard drive of the computer has a capacity of 30 gigabytes. (The prefix giga means 1 billion).
A. 3 × 109 bytes B. 3 × 1013 bytes C. 3 × 1010 bytes D. 30 × 109 bytes
Find the smallest value of N that will make the inequality hold for all n > N.
< 10-3
A. 9883 B. 9891 C. 9899 D. 9907
Suppose that in an assortment of 6 calculators, there are 3 with defective switches. Draw with and without replacement. If two machines are selected at random, what is the probability that both have defective switches? ?
A. with : 
, without : 
B. both : 
C. with : 
, without : 
D. both : 
E. none of these
In the problem, sin ? and cos ? are given. Find the exact value of the indicated trigonometric function.sin ? = 
, cos ? = 
Find sec ?.
A. 
B. 
C. 
D. 