The augmented matrix of a system of equations has been transformed to an equivalent matrix in row-echelon form. If the system is consistent, then give the solution. If it is not, then state that it is inconsistent.
A. (-8, 7)
B. (-3, 7)
C. (7, -8)
D. Inconsistent
Answer: D
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Determine all values that cause the expression to be undefined.
A. - 
B. -18
C. 0
D. 
Find the derivative of y with respect to x.y = -sin-1 (11x2 + 4)
A. 
B. 
C. 
D. 
Solve the problem.The population of rabbits varies with the season due to migration, birth and death. The number, N, of rabbits during month x on a certain midwestern farm can be estimated with the following graph.
1=January, 2=February, and so on. During which months are there approximately 140 rabbits on the farm?
A. August and September B. July and August C. May and June D. June and September
Solve the problem.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. The linear model for this data is 
where x is number of hours studied and y is score on the test. Use this model to predict the score on the test of a student who studies 13 hours. 
A. 76.2 B. 81.2 C. 86.8 D. 86.2