Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: B
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Add or subtract as indicated.-3.2 - (-8.1)
A. 11.3 B. 4.9 C. -11.3 D. -4.9
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Rotate the axes so that the new equation contains no xy-term. Graph the new equation.24xy - 7y2 + 36 = 0
A. 
B. 
Solve the problem.Attendance has been increasing for a minor league hockey team as they have had more success. The percentage of the seats filled in different years is given in the table. Let p be the percentage of seats filled each year that is t years since 2012. p = 2.31t + 60.81 can be used to model the data.
Predict the percentage of seats filled in 2019.
A. 76.98% of seats filled B. 100% of seats filled C. 23.29% of seats filled D. 66.35% of seats filled