Perform the indicated operation.
A. -9
B. 9
C. 7
D. -7
Answer: B
Mathematics
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Use < or > for ? to write a true sentence.
? 
A. > B. <
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Write the fraction in lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations using substitution.
A. x = -5, y = -1; x = 8, y = 
B. x = 5, y = 1; x = - 
, y = -8
C. x = -5, y = -1; x = 
, y = 8
D. x = 5, y = 1; x = -8, y = - 
Mathematics
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2
Mathematics