Tell whether permutations or combinations are being described.7 digits are selected (with possible repetition) to form a code for an alarm system.
A. Permutations
B. Combinations
Answer: A
Mathematics
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Solve the inequality graphically. Express the solution in set-builder notation.
< - 4
A. {
x > 28}
B. {
x < - 4}
C. {
x > - 2}
D. {
x > 14}
Mathematics
A vector v has initial point P and terminal point Q. Find the magnitude of 
.P(-13, -3), Q(14, 7)
A. 
B. 829
C. 37
D. 
Mathematics
Match the equation to its graph.y2 = 8x
A. 
B. 
C. 
D. 
Mathematics
Graph the system of inequalities.2x + 3y ? 6x - y ? 3y ? 2
A. 
B. 
C. 
D. 
Mathematics