Answer:
5n
Step-by-step explanation:
Summarizing what we know:
Casey has n nickels, and Meghan 4 times as many: 4n
Then the total number of nickets these two people have is n + 4n, or 5n.
$ 900 is the answer. as i shown in the attachment
c i dont know
Do you mean 5x+20=70?
If so (Under)
5x+20=70
5x=50
x=10
