Solve the problem.If the police have 7 suspects, how many different ways can they select 5 for a lineup?
A. 21
B. 42
C. 2520
D. 35
Answer: A
Mathematics
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Solve the problem.The function 
models the amount, f(x), in billions of dollars of new student loans x years after 1993. According to the model, in what year is the amount loaned expected to reach $25.5 billion?
A. 2000 B. 2002 C. 1997 D. 2001
Mathematics
?Analyze and sketch a graph of the function 
.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Find the average value over the given interval.y = mx + b; [-3, 3]
A. 3 B. b C. m D. 0
Mathematics
Find the centroid of the region.
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics