Solve the system by the elimination method.x + y = -1x + y = -7
A. {(0, -8)}
B. ?
C. {(0, 0)}
D. {(-1, -7)}
Answer: B
Mathematics
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Work the application and answer with a complete sentence.Amy teaches Chinese lessons for $55 per student for a 6-week session. From one group of students, she collects $1485. Find how many students are in the group.
A. 31 students are in the group. B. 27 students are in the group. C. 17 students are in the group. D. 29 students are in the group.
Mathematics
Evaluate the expression for the given replacement values.
+ 
for x = 54, y = 54
A. 450 B. 90 C. 26 D. 27
Mathematics
Multiply and simplify.
? 3b
A. 
b
B. 
C. 
D. 11b
Mathematics
Determine if the ordered pair is a solution to the given inequality.2x + 3y ? -6; (3, 4)
A. Yes B. No
Mathematics