Simplify the expression.9a - 3a + 6
A. 12a + 6
B. 12a
C. 6a + 6
D. -6a + 6
Answer: C
Mathematics
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Solve by the substitution method. If the system is inconsistent or dependent, say so.x + y = 8x + y = 7
A. (0, 15) B. (8, 7) C. (0, 0) D. Inconsistent
Mathematics
Solve the proportion.
= 
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation(s). Simplify if possible.
- 
- 
A. 
B. 
C. 
D. 
Mathematics
Find the area of the specified region.Inside the circle r = 
sin ? and outside the cardioid r = 1 + cos ?
A. 
B. 
C. 
D. 
Mathematics