Use the dot product to determine whether the vectors are parallel, orthogonal, or neither.v = 4i + j, w = i - 4j
A. orthogonal
B. parallel
C. neither
Answer: A
Mathematics
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Simplify the expression.log9 
A. 9 B. 2 C. -9 D. -2
Mathematics
A data set consists of 4,000 points and has mean of 840 with a standard of 16. How many actual points fall within +/- 3 å?
What will be an ideal response?
Mathematics
Fill in the missing numbers.
A. a = 8 B. a = 6 C. a = 5 D. a = 7
Mathematics
Solve the problem.The average price (in dollars) to rent a studio in a certain city can be approximated by the equation 
where t is the number of years since 1990. Solve this equation for t and use the new equation to determine approximately what year it will be when the average price of a studio in this city reaches $1240.00.
A. 2010 B. 2011 C. 2013 D. 2012
Mathematics