Yes to all the above. For $10, you got a bike you can ride. For $10, you got a bike that will last you probably long enough for you to determine whether or not you like BMX.
So, it's not a great bike. But it's ok for $10. In about three months of so (or the end of summer) come back and let us know how you're doing. Then everyone will tell you to get one of these:
https://shop.sunrisecyclery.com/display/1028/0/
scroll down until you get to the DK Six Pack
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East Hill