Use a graphing utility to graph the function and then answer the question.The polynomial function 
represents the yearly income (or loss) from a real estate investment, where t is time in years. After what year does income begin to decline?
A. 13
B. 6.5
C. 5.5
D. 8.67
Answer: B
Mathematics
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Solve.The ratio of the length to the width of a rectangular plot is 7 to 4. Its diagonal measures 
Find the dimensions of the plot.
A. Length: 28 ft; width: 16 ft B. Length: 31.5 ft; width: 18 ft C. Length: 35 ft; width: 20 ft D. Length: 24.5 ft; width: 14 ft
Mathematics
Find the derivative of the function.y = 
A. y ' = 
B. y ' = 
C. y ' = 
D. y ' = 
Mathematics
Evaluate the integral.
A. 4 sech x2 + C
B. 8 csch x2 + C
C. 
+ C
D. - 4 sech x2 + C
Mathematics
Graph the system of inequalities, and find the coordinates of the vertices.x - 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Mathematics