Write an augmented matrix for the system of equations. 3x + 9z = 12 8y + 6z = 68 9x + 7y + 8z = 47
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve.Ted walks around a lake on a path that is 5
miles long. It takes him 3
hours to complete his walk. What is his average speed (in miles per hour)?
A. 1
miles per hour
B. 1
miles per hour
C. 1
miles per hour
D. 2
miles per hour
Mathematics
Solve.Pam bought 1000 pencils for $0.03 each. How much did she spend?
A. $0.30 B. $300.00 C. $3.00 D. $30.00
Mathematics
Determine a formula for the exponential function.The graph of an exponential function is given. Which of the following is the correct equation of the function?
A. y = 0.73x B. y = 0.45x C. y = 2.8x D. y = 3.9x
Mathematics
Evaluate the expression according to the order of operations.16 - 
A. 18 B. 2 C. 14 D. 12
Mathematics