With \start{environment-name}

With <environment-name>

With \begin{environment-name}

With {environment-name}

It stands for "high" priority.

It makes the figure "horizontal".

It suggests placing the figure "here" if possible.

It centers the figure ("h" for "h-align").

Because the text is too long for a list item.

Because "black dot" is not the correct term; the correct term is "bullet".

Because it's in an enumerate (numbered) list, but it's describing an itemize (black dot) list. The text was clearly copied from the previous slide.

Because the output number "1" is not a black dot.

The image would be blank, but the document would compile.

LaTeX would stop with an "Undefined control sequence" error.

The image would load, but it would be in the wrong place.

LaTeX would automatically install the package.

$E=mc^2$

\inline{E=mc^2}

\math{E=mc^2}

E=mc^2

% (percent sign)

$ (dollar sign)

[ and ]

Centering mathematical expressions.

Writing formulas on their own separate lines.

Writing formulas that are part of a paragraph.

Writing complex, multi-line equations.