Answer:
n=15
Step-by-step explanation:
20n=300
divide by 20 on both sides
20n/20=n
300/20=15
n=15
Answer:
Plug in a 3 every time you see an "x" and the left side should equal the right side
Step-by-step explanation:
Answer:
The 2nd one
Step-by-step explanation:
because it ranges from 5 to 20