Answer:
3x + 4
Step-by-step explanation:
"the product of three and a number x" : This means you are multiplying 3 and an unknown number. Since the number is unknown, it's x!
"Four more than" : Adding 4 to the statement afterward, which is above! So it's just "+ 4"
After that, you put the two evaluated statements together, which makes your answer!
I hope this makes sense and that it helped! Have a great day c: