Best Recumbent Bike

I’m a 16 year old girl. about 5′4 and 151 lbs.
I just got a Schwinn Airdyne and I’m planning on burning 300 calories on it (which took me a little over an hour tonight cuz I didn’t have a whole lotta energy) 6 days per week.
well, at least according to the calorie counter on the bike it will be 300

and I’ve been trying to cut down 500 calories a day, too, but I’m not always sucessful.

How much weight would I lose per week if I burned the 300 calories a day and didn’t cut out the extra 500 calories a day? And how much would I lose if I burned the 300 calories a day and DID cut of the extra 500 calories a day?

I think having a better idea of how much weight I might actually lose will give me some motivation.
also- i know it’s probably hard to tell just from the info I gave you…

but I just want your guesses
thanks