NEED HELP ASAP (WILL MARK BRAINLYEST FOR CORRECT ANSWER)

Answer:
+7u+4+3v is written as a sum of three terms
+3 is a coefficient (a coefficient is a constant with a variable)
+ 4 is a constant
I hope this helps and if you need an explanation, for the first and third answer, let me know and I'd be happy to help. Good luck!