Approximate \( \sqrt{19} \) by following the steps below. \( \sqrt{19} \) must lie between the whole numbers and

Which set of ordered pairs does not represent a function? Answer \( \begin{array}{l}\{(5,-3),(1,-1),(-1,8),(9,-1)\} \\ \\ \{(-1,-3),(2,-5),(-2,0),(6,-3)\} \\ \\ \{\{(-7,-3),(-6,4),(-2,-5),(0,-3)\} \\ \\ \{(7,1),(7,-7),(-8,3),(9,5)\}\end{array} \)

7) Use the Laws of Logarithms to combine the expression: \( 4 \log x-\frac{1}{3} \log \left(x^{2}+1\right)+2 \log (x-1) \)

Use technology to find points and then graph the function \( y=2 \sqrt{x+7}-4 \) following the instructions below. \[ \text { done plotting points } \] Plot at least five points with integer coordinates that fit on the axes below. Click a point to delete it.

A number when rounded to the nearest tenth is 5430.1 . What is \( t \) mallest possible of that number in 2 decimal places?

Convert the complex number, \( z=2 \) cis \( \left(\frac{3 \pi}{2}\right) \), from polar to rectangular form. Enter your answer as \( a+b i \).