Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
(log6 x + log6 y) - 2 log6(x + 10)
A. log6 
B. log6 
C. log6 
D. log6 
Answer: B
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Express the number in scientific notation.870,000
A. 8.7 × 105 B. 8.7 × 104 C. 8.7 × 10-4 D. 8.7 × 10-5
Solve the problem.The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 30 miles per hour in 60 minutes, how fast must it travel to cover the same distance in 25 minutes?
A. 50 mph
B. 
mph
C. 
mph
D. 72 mph
Calculate the derivative of the function.
?
?
A. 
B. 
C. ?
D. ?
E. ?
Solve the problem. Round to the nearest tenth unless indicated otherwise.The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 
length with diameter 2 inches costs $48.00, how much will a 
length with diameter 
cost? Round to the nearest cent.
A. $370.37 B. $362.40 C. $370.10 D. $364.80