Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(-2, -3)}
B. {(-2, 4)}
C. {(-1, -1)}
D. {(2, 4)}
Answer: B
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List the ordered pairs from the table.Sales at the University Bookstore
A. (1, 670,000), (2, 190,000), (3, 1,090,000), (4, 320,000) B. (320,000, 1), (1,090,000, 2), (190,000, 3), (670,000, 4) C. (1, 190,000), (2, 670,000), (3, 320,000), (4, 1,090,000) D. (670,000, 1), (190,000, 2), (1,090,000, 3), (320,000, 4)
Solve the equation.
+ 
= 4
A. - 2, -8
B. - 
, 8
C. 2, 8
D. 
, -8
Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.
A. -2.6222 + 6.4903i B. -62.2997 + 31.9178i C. 6.4903 - 2.6222i D. 31.9178 - 62.2997i
Determine whether the quantity is a variable or a constant.The number of cars passing through an intersection
A. constant B. variable