diff --git a/ml/cc/exercises/linear_regression_taxi.ipynb b/ml/cc/exercises/linear_regression_taxi.ipynb
index 9e81039..09c5955 100644
--- a/ml/cc/exercises/linear_regression_taxi.ipynb
+++ b/ml/cc/exercises/linear_regression_taxi.ipynb
@@ -852,8 +852,8 @@
         "FARE = 2.25 * TRIP_MILES + 0.12 * TRIP_MINUTES + 3.25\n",
         "\n",
         "Typically with machine learning problems you would not know the 'correct'\n",
-        "formula, but in this case you can this knowledge to evaluate your model. Take a\n",
-        "look at your model output (the weights and bias) and determine how well it\n",
+        "formula, but in this case you can use this knowledge to evaluate your model. Take\n",
+        "a look at your model output (the weights and bias) and determine how well it\n",
         "matches the ground truth fare calculation. You should find that the model is\n",
         "roughly close to this formula.\n",
         "'''\n",