In this tutorial you will learn how to install broadcom wifi drivers on Linux mint.
Step 1 - Update your system
Run the following command on terminal to update your system
sudo apt-get update

Step 2 - Install Wifi Drivers
Run the command below to install Broadcom STA Wireless driver (Proprietary)
sudo apt-get install bcmwl-kernel-source

Run the command below to install b43 driver
sudo apt-get firmware-b43-installer

Step 3 - Activate wifi driver
Open menu, go to "Administration" tab and then click to "Driver Manager" this will launch the driver manager app where you can activate the broadcom wifi drivers.

If the broadcom driver doesn't appear on "Driver Manager" window, you need to reboot your system and then launch driver manager again and select the driver.

Then you should see the wifi icon on the panel

Conclusion
By now you should know how to install Broadcom Wifi drivers on Linux mint.