Solve the system of equations by the substitution method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. {(10, 0)}
B. {(0, 10)}
C. {(0, 0)}
D. {(10, 10)}
Answer: D
Mathematics
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Write an equation of the line.
A. y = 3x
B. y = 
x + 3
C. y = 5x + 3
D. y = 3x + 
Mathematics
Evaluate. Round dollar amounts to the nearest cent and other answers to the nearest thousandth when necessary.P
kn for P = $1,000, n = 6, r = 7% k = 1
A. $1605.78 B. $1402.55 C. $1500.73 D. $500.73
Mathematics
Use the given row transformation to change the matrix as indicated.
; -2 times row 1 added to row 2
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The polynomial function 
represents the yearly income (or loss) from a real estate investment, where t is time in years. After how many years does income begin to decline?
A. 10 yr B. 9 yr C. 13.3 yr D. 20 yr
Mathematics