Solutions
Solutions to Try Its
1. [latex]\frac{$2.84-$2.31}{5\text{ years}}=\frac{$0.53}{5\text{ years}}=$0.106[/latex] per year. 2. [latex]\frac{1}{2}[/latex] 3. [latex]a+7[/latex] 4. The local maximum appears to occur at [latex]\left(-1,28\right)[/latex], and the local minimum occurs at [latex]\left(5,-80\right)[/latex]. The function is increasing on [latex]\left(-\infty ,-1\right)\cup \left(5,\infty \right)[/latex] and decreasing on [latex]\left(-1,5\right)[/latex].