Solve the system using elimination.2.1x + 0.3y = -10.80.7x + 0.6y = -4.1
A. (-5.3, -1)
B. (-2.9, -0.7)
C. (-5, -1)
D. (-7.1, -0.7)
Answer: C
Mathematics
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Evaluate the expression.3-2
A. -9
B. 9
C. 
D. 
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Determine algebraically whether the graph is symmetric with respect to the x-axis, the y-axis, and the origin.x2 + y2 = 9
A. y-axis only B. x-axis, y-axis, origin C. Origin only D. x-axis only
Mathematics
Solve the problem.How long does it take $1125 to triple if it is invested at 7% interest, compounded quarterly? Round your answer to the nearest tenth.
A. 18.1 yr B. 18.1 mo C. 15.8 yr D. 15.8 mo
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics