Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Decide whether or not the matrices are inverses of each other.
and 
A. Yes B. No
Mathematics
Determine whether the graph of the given equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = 0.79x2 + |x| + 7
A. No symmetry B. y-axis C. Origin D. x-axis
Mathematics
Add.(-3.07) + 0.57 + (-4.03)
A. -7.67 B. -6.53 C. 1.53 D. 0.39
Mathematics
The bar graph shows the number of new residents in several towns during the years 1999 to 2001. Use the graph to answer the question. 
How many more new residents were there in total in 2001 than in 1999?
A. 172 B. 154 C. 168 D. 141
Mathematics