Use the properties of logarithms to rewrite the expression. Simplify the result if possible. Assume all variables represent positive real numbers.log2 
A. (9 log2 x)(7 log2 y) ÷ log2 7
B. 9 log2 x + 7 log2 y - log2 7
C. 9 log2 x + 7 log2 y + log2 7
D. ( log2 x)9 + (log2 y)7 - log2 7
Answer: B
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The following problem involves adjustable-rate mortgage. You the given table if necessary.
Suppose your mortgage is $75,000 for 20 years. The index rate is 3.5% and the margin is 2.4%. After two years, the Treasury index increases to 4.6%. Using the adjusted balance of 
826.73, find the new monthly payment.
A. $489.67 B. $514.79 C. $577.59 D. None of the above is correct.
Write each whole number in standard form.Last year the population of a city increased by two thousand, one hundred eight.
A. 2018 B. 2180 C. 21,008 D. 2108
Find the average of the list of numbers.79, 65, 48, 43, 72, 47
A. 59 B. 57 C. 60 D. 65
Find a general term an for the geometric sequence.a1 = 2 and r = 2
A. an= 2 + 2(n - 1) B. an = 2(2)n-1 C. an =2(2)(n-1) D. an = 2(n-1) + 1