Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
What will be an ideal response?
x = -1, y = -2, z = 4
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Evaluate the derivative of the given function for the given value of x.y = 
3, x = 5
A. - 27 B. 27 C. 18 D. - 18
Solve the problem.Assume that the profit P made when t units are sold, t > 0, is given by P(t) = t2 - 18t + 72. For what values of t will there be a profit (that is, P > 0)?
A. 6 < t < 12 B. t = 18 C. 0 < t < 6 or t > 12 D. t = 6 or t = 12
Match the correct graph to the given function.y = -(2 - x)2 + 2
A. 
B. 
C. 
D. 
Use a proportion to solve the problem.To determine the number of fish in a lake, a park ranger catches 240 fish, tags them, and returns them to the lake. Later, 72 fish are caught, and it is found that 40 of them are tagged. Estimate the number of fish in the lake.
A. 432 fish B. 691,200 fish C. 133 fish D. 12 fish