Given that 
and 
, evaluate:
?
?
A. 14
B. 9
C. 13
D. 12
Answer: D
Mathematics
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Solve the problem.Your favorite stock opened the day at $30 per share and ended the day at $23 per share. Let x represent the amount of your gain or loss per share. An equation that represents the situation is 
Solve for x.
A. x = 7; gained $7 per share B. x = 7; lost $7 per share C. x = -7; gained $7 per share D. x = -7; lost $7 per share
Mathematics
Find the value of the expression using the given values.
?x = -7, y = 8
A. 1 B. -1 C. -15 D. 15
Mathematics
Use the properties of real numbers to simplify the expression.-10(5z + m)
A. -50z - 10m B. 50z - m C. 50z - 10m D. -50z + 10m
Mathematics
Write the radical expression as an exponential expression.
A. 
B. 
4
C. 
1/4
D. 
1/4
Mathematics