\documentclass[11pt]{article}

\usepackage{amssymb}

\textwidth = 6.5 in

\textheight = 9 in

\oddsidemargin = 0.0 in

\evensidemargin = 0.0 in

% Dear Student, these commands below define commands that

% you can use later. Don't type anything until after "Begin document".

% Any math symbol or expression you type should come between

% a pair of dollar signs (within a line of text) or within.

\newcommand\problem[1]{\noindent {\bf Problem #1:} \newline}

\newcommand\integers{\ensuremath{\mathbb{Z}}}

\newcommand\naturals{\ensuremath{\mathbb{N}}}

\newcommand\rationals{\ensuremath{\mathbb{Q}}}

\newcommand\reals{\ensuremath{\mathbb{R}}}

\begin{document}

\noindent {Your Name Here} \hfill Mat 229 \hfill {Due Date}

\vspace{5mm}

%Fill in the number of the problem in the brackets: {}. .

% Any math symbol or expression you type should come between

% two dollar signs. For example, you might say something like

% "For every $x \in \integers$, there is some . . . ."

\problem{18} In this problem, we're asked to examine the differential equation

$$

\frac{dy}{dx} = x +y

$$

where $y$ is a function of $x$.

\medskip\noindent{\bf Questions for Dr.~Crannell:}\newline\medskip

%If you have questions or comments for your professor, feel free to

% include them here; otherwise you can just erase the line above.

\end{document}