HELP ME PLEASE I"M FAILING

Answer:
VX = 4n +7
explanation:
the equation is VX = n + 7 + 3n, all you need to do is add the n variables and get VX = 4n + 7.
Answer:
21
Step-by-step explanation:
n+7=3n ⇒ 2n=7 ⇒ n= 3.5
VX= 2*(n+7) = 2*(3.5+7)= 21
in case you need
WY= 2*(4n+1)= 2*(4*3.5+1)= 30