Solve the problem.The polynomial function I(t) = -0.1t2 + 1.8t 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. 9
B. 8
C. 12.00
D. 18
Answer: A
Mathematics
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Solve the problem.Let f(n) = 
- 
. What is f(n) approximately equal to as n gets large?Hint: Compute various examples on your calculator.
A. 
B. 
C. 
D. 
Mathematics
If the statement is true for all sets C and D, write "true." If it is not true for all sets C and D, write "false." Assume that C ? ?, U ? ?, and C ? U.If C ? D, then C ? D.
A. True B. False
Mathematics
Graph the region described by the inequality.5x ? -4y
A. 
B. 
C. 
D. 
Mathematics
Find the common ratio.75, 60, 48, 38.4, 30.72, . . .
A. -0.8 B. 1.25 C. 0.8 D. 30.72
Mathematics