diff --git a/lab-python-lambda-map-reduce-filter.ipynb b/lab-python-lambda-map-reduce-filter.ipynb
index 96c9781..bac982c 100644
--- a/lab-python-lambda-map-reduce-filter.ipynb
+++ b/lab-python-lambda-map-reduce-filter.ipynb
@@ -94,12 +94,31 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "id": "0781335d-39cf-403d-b86a-ca908a09fe55",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[(2500, 'credit'),\n",
+       " (850, 'credit'),\n",
+       " (1500, 'credit'),\n",
+       " (5000, 'credit'),\n",
+       " (1000, 'credit')]"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "transactions = [(-1200, 'debit'), (2500, 'credit'), (-100, 'debit'), (850, 'credit'), (-250, 'debit'), (1500, 'credit'), (-300, 'debit'), (5000, 'credit'), (-850, 'debit'), (1000, 'credit')]\n",
+    "#Create a new list called credits that includes all of the debit transactions from the list transactions. Use the filter () function.\n",
+    "credits = list(filter(lambda x: x[1] == 'credit', transactions))\n",
+    "\n",
+    "credits"
    ]
   },
   {
@@ -124,12 +143,37 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "id": "25073469-7258-4fc6-b0a0-ef8ea57688fe",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[(-100, 'debit'),\n",
+       " (-250, 'debit'),\n",
+       " (-300, 'debit'),\n",
+       " (-850, 'debit'),\n",
+       " (-1200, 'debit')]"
+      ]
+     },
+     "execution_count": 2,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "# Create a list of debit transactions\n",
+    "debits = list(filter(lambda x: x[1] == 'debit', transactions))\n",
+    "\n",
+    "# Define a lambda function for sorting in descending order by amount\n",
+    "sort_descending = lambda x: x[0]\n",
+    "\n",
+    "# Sort the debits list in descending order by amount\n",
+    "debits_sorted = sorted(debits, key=sort_descending, reverse=True)\n",
+    "\n",
+    "debits_sorted\n",
+    "\n"
    ]
   },
   {
@@ -158,7 +202,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "id": "e1de9d03-f029-4e2e-9733-ae92e3de7527",
    "metadata": {},
    "outputs": [],
@@ -169,12 +213,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "id": "2f253b7e-5300-4819-b38f-9fc090554f51",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[105.0, 52.5, -26.25, 1050.0, -10.5]"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "# Calculate new balances after adding 5% interest\n",
+    "balances_with_interest = list(map(lambda x: x * 1.05, balances))\n",
+    "balances_with_interest\n"
    ]
   },
   {
@@ -195,7 +252,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "id": "69e24c3b-385e-44d6-a8ed-705a3f58e696",
    "metadata": {},
    "outputs": [],
@@ -209,12 +266,29 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "id": "0906a9b0-d567-4786-96f2-5755611b885e",
+   "execution_count": 7,
+   "id": "2a3b2447",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[{'balance': 1020.0, 'interest_rate': 0.02},\n",
+       " {'balance': 2020.0, 'interest_rate': 0.01},\n",
+       " {'balance': 515.0, 'interest_rate': 0.03}]"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "# your code goes here\n"
+    "# Calculate new balances after adding interest for each account\n",
+    "accounts_with_interest = list(\n",
+    "    map(lambda acc: {'balance': acc['balance'] * (1 + acc['interest_rate']), 'interest_rate': acc['interest_rate']}, accounts)\n",
+    ")\n",
+    "accounts_with_interest"
    ]
   },
   {
@@ -243,14 +317,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "id": "6284dbd3-e117-411e-8087-352be6deaed4",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "-36.75\n"
+     ]
+    }
+   ],
    "source": [
     "from functools import reduce\n",
     "\n",
-    "# your code goes here"
+    "# Filter negative balances\n",
+    "negative_balances = list(filter(lambda x: x < 0, balances_with_interest))\n",
+    "\n",
+    "# Sum the negative balances using reduce\n",
+    "total_negative = reduce(lambda a, b: a + b, negative_balances, 0)\n",
+    "\n",
+    "print(total_negative)"
    ]
   },
   {
@@ -273,10 +361,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 9,
    "id": "da2264b5-298e-4b45-99df-852b94e90d15",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[650, 1600, 275]"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "accounts = [\n",
     "    {'balance': 1000, 'withdrawals': [100, 50, 200]},\n",
@@ -284,13 +383,17 @@
     "    {'balance': 500, 'withdrawals': [50, 100, 75]},\n",
     "]\n",
     "\n",
-    "# your code goes here\n"
+    "def calculate_balance(account):\n",
+    "    return account['balance'] - sum(account.get('withdrawals', []))\n",
+    "\n",
+    "remaining_balances = list(map(calculate_balance, accounts))\n",
+    "remaining_balances\n"
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -304,7 +407,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.9.6"
   }
  },
  "nbformat": 4,