Solve the Problem $\mathrm { I } ( \mathrm { t } ) = - 0.1 \mathrm { t } ^ { 2 } + 1.9 \mathrm { t }$

question 361

Multiple Choice

Solve the problem.
-The polynomial function $\mathrm { I } ( \mathrm { t } ) = - 0.1 \mathrm { t } ^ { 2 } + 1.9 \mathrm { t }$ represents the yearly income (or loss) from a real estate investment, where $t$ is time in years. After how many years does income begin to decline? Round to the nearest tenth of a year, if necessary.

• A) \(9.5\) years
• B) \(12.7\) years
• C) 19 years
• D) \(8.5\) years

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