Simplify the expression using the order of operations.2(x + 3y - z) - 2(3x - y + 3z)
A. -4x + 8y + 8z
B. -4x + 4y - 8z
C. 8x + 8y - 8z
D. -4x + 8y - 8z
Answer: D
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An undercover police officer is assigned the job of once a night walking each of the 48 blocks of a certain section of town described by the street grid shown below. The walk starts and ends at A. The officer wants to minimize the total number of blocks he has to walk each night.
How many vertices of odd degree are there in the graph representing this problem?
A. 24 B. 20 C. 22 D. 18 E. none of these
Solve by using the quadratic formula.
d + 1 + 
d2 = 0
A. 9 ± 
B. 9 ± 
C. -9 ± 
D. -9 ± 
Evaluate the expression without the use of a calculator, and then verify your answer using a calculator.log 
A. 3 B. 1000 C. -3 D. 30
Solve the problem.What should the quarterly payments be for an annuity valued at $10,000 4 years from now if interest is 8% compounded quarterly?
Fill in the blank(s) with the appropriate word(s).