Solve the system of equations.
A. x = z + 3
y = 3z + 1
z = any real number
B. x = 3z + 1
y = z - 3
z = any real number
C. x = -3 - z
y = 3z + 1
z = any real number
D. inconsistent (no solution)
Answer: C
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Solve the problem.The following table gives the outside temperature in degrees Fahrenheit on a winter day in Death Valley, California. 
Calculate the average rate of change in temperature between 8:00 am and 11:00 am. Round your answer to two decimal places when appropriate.
A. 4.33°F B. 3.26°F C. 4.64°F D. 5.36°F
Use a combination of rules for exponents to simplify. Write answers with only positive exponents. Assume that all variables represent nonzero real numbers.
-4
A. 
B. 
C. 
D. 
Fill in the blank with one of the words or phrases listed below. 
A(n) 
is a set of points extending indefinitely in two directions.
A. line B. transversal C. line segment D. ray
Subtract.735
A. 470 B. 990 C. 480 D. 380