Respuesta :
Answer:
15
Step-by-step explanation:
since 3d is multiplying, it would be set up as 3*5=15
Well if d=5 than 3d must equal 15.
What we do is simply turn D into 5, then since there is no sign in between, we multiply 3 and 5.
What we do is simply turn D into 5, then since there is no sign in between, we multiply 3 and 5.