Write the augmented matrix for the system.2x+ 7z = 18 2y + 4z = 203x + 8y + 8z = 70
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem. Round to the nearest dollar if needed.To save for retirement, you decide to deposit $2500 into an IRA at the end of each year for the next 35 years. If the interest rate is 9% per year compounded annually, find the value of the IRA after 35 years.
A. $48,535 B. $23,272,500 C. $539,277 D. $492,456
Solve the system by either elimination or substitution. Verify your work by using "intersect" on your graphing calculator of by checking that your result satisfies both equations of the system. x = 5y - 239x - 6y = 27
A. (-7, 7) B. empty set solution; inconsistent system C. (7, 6) D. (6, 7)
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = log4x - 2 B. y = log4(x + 2) C. y = log4x D. y = log4(x - 2)
Find an equation of the line that contains the points listed in the table.
A. y = x + 5 B. y = x + 10 C. y = x - 5 D. y = 5x