Respuesta :
3x-4 is the answer, you have to see that if its 3 times her nieces age it would be 3x and if its four less than that it is 3x-4
Answer:3x-4
Step-by-step explanation:
Given niece age is x
Also Tina's age is 4 years less than 3 times her niece age
this can be represented by
Tina's age=3x-4
Thus 3x-4 is the correct relation to show tina age.