Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ?
B. {(1, 8)}
C. {(1, 7)}
D. {(0, 8)}
Answer: C
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Determine whether the collection is well-defined.The collection of football teams that have won the Super Bowl.
A. Well-defined B. Not well-defined
Perform the indicated operation and express in lowest terms.
? 
A. 3x + 2
B. -(3x - 2)
C. 
D. -(3x - 2)(x + 5)
Use a combination of rules for exponents to simplify. Write answers with only positive exponents. Assume that all variables represent nonzero real numbers.
-4
A. 
B. 
C. 
D. 
Find the first term, the common difference, and give a recursive formula for the arithmetic sequence.9th term is -14; 14th term is -29
A. a1 = 10, d = 3, an = an-1 + 3 B. a1 = 13, d = -3, an = an-1 - 3 C. a1 = 10, d = -3, an = an-1 - 3 D. a1 = 13, d = 3, an = an-1 + 3