Deprecated and Warnings

When I have debug set to true I see the following:

Deprecated: Function create_function() is deprecated in /home/kim/public_html/wp-content/plugins/cc-canadian-mortgage-calculator/cc-mortgage-canada.php on line 136

Warning: Cannot modify header information - headers already sent by (output started at /home/kim/public_html/wp-content/plugins/cc-canadian-mortgage-calculator/cc-mortgage-canada.php:136) in /home/kim/public_html/wp-includes/functions.php on line 6362

Warning: Cannot modify header information - headers already sent by (output started at /home/kim/public_html/wp-content/plugins/cc-canadian-mortgage-calculator/cc-mortgage-canada.php:136) in /home/kim/public_html/wp-admin/includes/misc.php on line 1310

Warning: Cannot modify header information - headers already sent by (output started at /home/kim/public_html/wp-content/plugins/cc-canadian-mortgage-calculator/cc-mortgage-canada.php:136) in /home/kim/public_html/wp-admin/admin-header.php on line 9

The plugin generated 200 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

I would appreciate info as to how to deal with it.
Thank you.

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