Solve the problem.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. 8.5 yr
B. 12.67 yr
C. 19 yr
D. 9.5 yr
Answer: D
Mathematics
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Graph the solution set on a number line.{x|x ? 3}
A. 
B. 
C. 
D. 
Mathematics
Find the limit.
coth x
A. 0 B. 1 C. ? D. -?
Mathematics
Sketch the graph of the function. Describe how the graph can be obtained from the graph of a basic exponential function.f(x) = 3x - 4
A. Shift y = 3x up 4 unit(s)
B. Shift y = 3x down 4 unit(s)
C. Shift y = 3x down 4 unit(s)
D. Shift y = 3x up 4 unit(s)
Mathematics
Use the discriminant to determine the number of solutions of the quadratic equation.9x2 + 12x + 4 = 0
A. no real solution B. 1 real solution C. 2 real solutions
Mathematics