The functions requests today are unusually high. I do not have historical data. But my experience on firebase, before migrating to Cloudflare, tells it should be less than 10K.
At present, if you have any Functions in your project at all, all requests to your site are counted as Function requests. This is a technical detail while the service is in beta. You can request a higher limit (without charge during the beta, for as long as this detail remains true) by submitting this form.