PLEASE HELP ANYONE HELP ?!!!!!!!!!!!!!!!)))):::::

Answer:
3x
Step-by-step explanation:
givens: x=4
now try your options:
3(4)+3=15
12+3=15
15=15
The first option is correct, therefore the answer is 3x
Answer: I think it is 3x
Step-by-step explanation: I've done this before.