I don't know what changes I've made lol

LAB-4/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

LAB-4/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>LAB-4</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

LAB-4/src/module-info.java

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+/**
+ * 
+ */
+/**
+ * @author brett
+ *
+ */
+module uwstout.courses.cs144 {
+}

LAB-4/src/uwstout/courses/cs144/labs/lab4/ExpFormat.java

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+package uwstout.courses.cs144.labs.lab4;
+
+import java.text.DecimalFormat;
+
+/**
+ * An expression formatter
+ * 
+ * @author Brett Bender
+ * @version 2022.10.10
+ *
+ */
+public class ExpFormat {
+
+	private static final DecimalFormat DECIMAL_FORMAT = new DecimalFormat("0.##");
+
+	private int x;
+	private int y;
+	private double result;
+
+	/**
+	 * An expression formatter
+	 * 
+	 * @param ix      The X value
+	 * @param iy      The Y value
+	 * @param iresult The result
+	 */
+	public ExpFormat(int ix, int iy, double iresult) {
+		x = ix;
+		y = iy;
+		result = iresult;
+	}
+
+	/**
+	 * Get the X value of the expression
+	 * 
+	 * @return The X value
+	 */
+	public int getX() {
+		return x;
+	}
+
+	/**
+	 * Get the Y value of the expression
+	 * 
+	 * @return The Y value
+	 */
+	public int getY() {
+		return y;
+	}
+
+	/**
+	 * Get the result of the expression
+	 * 
+	 * @return The result
+	 */
+	public double getResult() {
+		return result;
+	}
+
+	@Override
+	public String toString() {
+		String reString = "";
+		reString += x + " * " + y + " + 2\n";
+		reString += "----------\n";
+		reString += x + "^2 + 1\n";
+		reString += "= " + DECIMAL_FORMAT.format(result);
+
+		return reString;
+	}
+}

LAB-4/src/uwstout/courses/cs144/labs/lab4/Expression.java

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+package uwstout.courses.cs144.labs.lab4;
+
+import java.util.Scanner;
+
+/**
+ * Calculates (xy + 2)/(x^2 + 1) with the values entered by the end user.
+ * 
+ * @author Brett Bender
+ * @version 2022.10.10
+ */
+public class Expression {
+
+	/**
+	 * Calculates (xy + 2)/(x^2 + 1) with the values entered by the end user. It
+	 * then prints out a formatted version of the expression and result
+	 * 
+	 * TESTS
+	 * 
+	 * IN1: [1, 1] OUT1: [1.5]
+	 * 
+	 * IN2: [1, 0] OUT2: [1]
+	 * 
+	 * IN3: [0, 1] OUT3: [2]
+	 * 
+	 * IN4: [-1, -1] OUT4: [1.5]
+	 * 
+	 * @param args Command line arguments, not used
+	 */
+	public static void main(String[] args) {
+		Scanner scan = new Scanner(System.in);
+
+		// Read Inputs
+		/// Read X
+		System.out.print("Enter the x value: ");
+		int x = scan.nextInt();
+
+		/// Read Y
+		System.out.print("Enter the y value: ");
+		int y = scan.nextInt();
+
+		// Calculate: (xy + 2)/(x^2 + 1)
+		double result = ((x * y) + 2) / (Math.pow(x, 2) + 1);
+
+		// Format & Print
+		ExpFormat ef = new ExpFormat(x, y, result);
+		System.out.println("\n" + ef);
+
+		scan.close();
+	}
+
+}

LAB-4/src/uwstout/courses/cs144/labs/lab4/FabricationCost.java

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+package uwstout.courses.cs144.labs.lab4;
+
+import java.text.NumberFormat;
+import java.util.Scanner;
+
+/**
+ * Calculates the fabrication cost for a number of units, the cost per unit, and
+ * a mark-up. This automatically includes a constant setup cost
+ * 
+ * @author Brett Bender
+ * @version 2022.10.10
+ *
+ */
+public class FabricationCost {
+
+	private static final double SETUP_COST = 3575.95;
+
+	/**
+	 * Calculates the fabrication cost for a number of units, the cost per unit, and
+	 * a mark-up. This automatically includes a constant setup cost
+	 * 
+	 * 
+	 * TESTS
+	 * 
+	 * IN1: [5, 5.00, 0.5] OUT1: [5, $5.00, 50%, $3,613.45]
+	 * 
+	 * IN2: [-1, -1.0, 0.0] OUT2: [1, $1.00, 0%, $3,756.95]
+	 * 
+	 * IN3: [0, 0.0, 0.0] OUT3: [0, 0.00, 0%, $3,575.95]
+	 * 
+	 * IN4: [10, 2.75, -0.15]: [10, $2.75, -15%, $3,599.32]
+	 * 
+	 * @param args Command line arguments (not used)
+	 */
+	public static void main(String[] args) {
+		Scanner scan = new Scanner(System.in);
+
+		// Read Units
+		System.out.print("Enter the number of units: ");
+		int units = Math.abs(scan.nextInt());
+
+		// Read Cost Per Unit
+		System.out.print("Enter the cost per unit: $");
+		double costPerUnit = Math.abs(scan.nextDouble());
+
+		// Red Percent Mark-up
+		System.out.print("Enter the percent markup: ");
+		double percentMarkup = scan.nextDouble();
+
+		// Calculate
+		/// Initial calculation of units x cost per unit
+		double totalCost = units * costPerUnit;
+		/// Add the mark-up
+		totalCost += totalCost * percentMarkup;
+		/// Add the setup cost
+		totalCost += SETUP_COST;
+
+		// Output Units, Cost per unit, percent mark-up, and computed value
+		System.out.println("Units: " + units);
+		System.out.println("Cost Per: " + NumberFormat.getCurrencyInstance().format(costPerUnit));
+		System.out.println("Markup: " + NumberFormat.getPercentInstance().format(percentMarkup));
+		System.out.println("Total Cost: " + NumberFormat.getCurrencyInstance().format(totalCost));
+
+		scan.close();
+
+	}
+
+}