diff --git a/.idea/misc.xml b/.idea/misc.xml
index 0792e77..c56f193 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_13" default="true" project-jdk-name="13.0.1" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="corretto-11 (2)" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/InsuranceCalculator.java b/src/InsuranceCalculator.java
index 558e0a0..d136920 100644
--- a/src/InsuranceCalculator.java
+++ b/src/InsuranceCalculator.java
@@ -1,15 +1,24 @@
+import java.lang.Math;
+
 public class InsuranceCalculator {
 
+    private InsuranceStrategy strategy;
+
     public double calculateInsurance(double income) {
-        if (income <= 10000) {
-            return income*0.365;
-        } else if (income <= 30000) {
-            return (income-10000)*0.2+35600;
-        } else if (income <= 60000) {
-            return (income-30000)*0.1+76500;
-        } else {
-            return (income-60000)*0.02+105600;
+        InsuranceStrategy[] hashBrown = new InsuranceStrategy[6];
+        hashBrown[0] = new InsuranceStrategyLow();
+        hashBrown[1] = new InsuranceStrategyMedium();
+        hashBrown[2] = new InsuranceStrategyMedium();
+        hashBrown[3] = new InsuranceStrategyHigh();
+        hashBrown[4] = new InsuranceStrategyHigh();
+        hashBrown[5] = new InsuranceStrategyHigh();
+        int deviousNum = (int)Math.floor(Math.abs(income / 10000 - 0.1));
+        try {
+            strategy = hashBrown[deviousNum];
+            return strategy.calculate(income);
+        } catch(ArrayIndexOutOfBoundsException error) {
+            strategy = new InsuranceStrategyVeryHigh();
+            return strategy.calculate(income);
         }
     }
-
 }
diff --git a/src/InsuranceStrategy.java b/src/InsuranceStrategy.java
new file mode 100644
index 0000000..1ebf362
--- /dev/null
+++ b/src/InsuranceStrategy.java
@@ -0,0 +1,11 @@
+public abstract class InsuranceStrategy {
+    public double calculate(double income) {
+        return (income - getAdjustment()) * getWeight() + getConstant();
+    }
+
+    public abstract int getConstant();
+
+    public abstract double getWeight();
+
+    public abstract int getAdjustment();
+}
diff --git a/src/InsuranceStrategyHigh.java b/src/InsuranceStrategyHigh.java
new file mode 100644
index 0000000..e316b15
--- /dev/null
+++ b/src/InsuranceStrategyHigh.java
@@ -0,0 +1,16 @@
+public class InsuranceStrategyHigh extends InsuranceStrategy {
+    @Override
+    public int getConstant() {
+        return 76500;
+    }
+
+    @Override
+    public double getWeight() {
+        return 0.1;
+    }
+
+    @Override
+    public int getAdjustment() {
+        return 30000;
+    }
+}
diff --git a/src/InsuranceStrategyLow.java b/src/InsuranceStrategyLow.java
new file mode 100644
index 0000000..58278e8
--- /dev/null
+++ b/src/InsuranceStrategyLow.java
@@ -0,0 +1,16 @@
+public class InsuranceStrategyLow extends InsuranceStrategy {
+    @Override
+    public int getConstant() {
+        return 0;
+    }
+
+    @Override
+    public double getWeight() {
+        return 0.365;
+    }
+
+    @Override
+    public int getAdjustment() {
+        return 0;
+    }
+}
diff --git a/src/InsuranceStrategyMedium.java b/src/InsuranceStrategyMedium.java
new file mode 100644
index 0000000..6994a01
--- /dev/null
+++ b/src/InsuranceStrategyMedium.java
@@ -0,0 +1,16 @@
+public class InsuranceStrategyMedium extends InsuranceStrategy {
+    @Override
+    public int getConstant() {
+        return 35600;
+    }
+
+    @Override
+    public double getWeight() {
+        return 0.2;
+    }
+
+    @Override
+    public int getAdjustment() {
+        return 10000;
+    }
+}
diff --git a/src/InsuranceStrategyVeryHigh.java b/src/InsuranceStrategyVeryHigh.java
new file mode 100644
index 0000000..1a71ba1
--- /dev/null
+++ b/src/InsuranceStrategyVeryHigh.java
@@ -0,0 +1,16 @@
+public class InsuranceStrategyVeryHigh extends InsuranceStrategy {
+    @Override
+    public int getConstant() {
+        return 105600;
+    }
+
+    @Override
+    public double getWeight() {
+        return 0.02;
+    }
+
+    @Override
+    public int getAdjustment() {
+        return 60000;
+    }
+}
diff --git a/test/EMPTY b/test/EMPTY
deleted file mode 100644
index e69de29..0000000
diff --git a/test/InsuranceCalculatorTest.java b/test/InsuranceCalculatorTest.java
new file mode 100644
index 0000000..54f8a32
--- /dev/null
+++ b/test/InsuranceCalculatorTest.java
@@ -0,0 +1,44 @@
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class InsuranceCalculatorTest {
+    @Test
+    public void low() {
+        assertEquals(
+                1825,
+                insuranceFor(5000),
+                0.01
+        );
+    }
+
+    @Test
+    public void medium() {
+        assertEquals(
+                38600,
+                insuranceFor(25000),
+                0.01
+        );
+    }
+
+    @Test
+    public void high() {
+        assertEquals(
+                78500,
+                insuranceFor(50000),
+                0.01
+        );
+    }
+
+    @Test
+    public void veryHigh() {
+        assertEquals(
+                106400,
+                insuranceFor(100000),
+                0.01
+        );
+    }
+
+    private double insuranceFor(double income) {
+        return new InsuranceCalculator().calculateInsurance(income);
+    }
+}
\ No newline at end of file