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. (33, -23, 7)
B. (50, -24, 7)
C. (48, -23, 7)
D. Inconsistent
Answer: C
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Solve the problem.The annual population density of a species of insect after n years is modeled by a sequence. Suppose that the initial density of insects is 624 with r = 0.8. Write a recursive sequence that describes this data, where an denotes the insect density during year n.Find the terms a1 , a2 , a3 , ...... until you are able to interpret the results.
A. The population density increases by 20% each year. B. The population density decreases by 20% each year. C. The population density increases by 80% each year. D. The population density decreases by 80% each year.
Graph y = f(x). State whether the graph depicts exponential growth or exponential decay.f(x) = 
x
A. Decay;
B. Growth;
C. Decay;
D. Growth;
Solve the problem.In order to purchase a home, a family borrows 
at an annual interest rate of 6.35%, to be paid back over a 
period in equal monthly payments. What is their monthly payment?
A. $552.58 B. $19.84 C. $396.88 D. $608.71
Graph the piecewise-defined function. 
A. 
B. 
C. 
D. 