I do not know because I did install Mathtype.
All I can recommend is to install it on your own computer at home and see if it does what you want. If it does, you have a compelling argument for your boss. Again, there is no charge.
Otherwise, try posting a sample document here. Someone who is not using Mathtype can examine it and give suggestions. Often a screenshot does not convey the needed info.
How to attach a screenshot or file in this forum.
Paul suggested this a couple of days ago.