Write the expression in standard form. Do not use a calculator.11i - 2i
A. 13i
B. -9i
C. 9i
D. 9
Answer: C
Mathematics
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Solve the system by the substitution method.
+ y2 = 16 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A person burns 9.4 calories per minute while walking. One must burn about 3500 calories in order to lose 1 lb. How many pounds would the person lose by walking for 9 hours? Round to the nearest hundredth.
A. 14.50 lb B. 0.02 lb C. 1.02 lb D. 1.45 lb
Mathematics
Match the inequality or system of inequalities with its graph.y ? x - 3y ? 1 
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.x - 
= 
A. 
B. 
C. 
D. 
Mathematics