14v

I didn't know what volts usb was until i looked it up=5v , adaptor=9v 5+9v=14 because i had both plugged in for a 5-10 minutes without thinking. the r3 is rated 7-12v , will the extra couple of volts damage it in any way?

Depends how much current you are using for various loads.
The higher the input voltage, the more power is dissipated as heat in the regulator.
When it gets hot enough, it will go into thermal shutdown - then cool off some & turn on - then get hot & shut down ...
If it gets too hot too fast, it dies.
The spec for the NCP1117ST50T3G says:

5.0 V (Vin = 7.0 V, Iout = 10 mA, TA = 25 °C)
(Vin = 6.5 V to 12 V, Iout = 0 mA to 800 mA) (Note 4)

Note 4. NCP1117: Tlow = 0°C , Thigh = 125°C
NCV1117: Tlow = −40°C, Thigh = 125°C

So at 14V, you're kind of the test pilot for operation.

Note that you can connect both supplies at the same time.
These supplies will not be added up, like you seem to think.
So if you have the USB and the barrel jack @ 9 volts connected, you still will have 5 volts.
The regulator will regulate the 9 volts to 5 volts, and then a decision will be made which of the 5 volts will be used.
I don't know what the order would be here.

So there's no 14 volts here.