Hi Ann,
I looked at your invoice and you are being charged for two Reserved Virtual Machine Instances for Canada Central region with 3 year term, monthly payment. One is Standard_DS1_v2 and the other is Standard__B2s.
People purchase Reserved Instances to reduce the cost of VMs. Article below explains how discount is applied:
How the Azure reservation discount is applied to virtual machines
If you have any questions or concerns please add a comment below.
If you feel there is something incorrect with the charges you may create billing support request and discuss with engineer. Billing support is free. I would be happy to provide detailed instructions for creating billing support request in portal.
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP