Every day Jon saves $4 by bringing lunch to school. How much does Jon save after five days of school? Is this a positive or a negative
number? Why?

he saves 20 bucks after 5 days. it is a positive number since he is not spending anything so his balance should not go down

Step-by-step explanation:

$4 times 5 is $20

details

step-by-step explanation:

aloha~! my name is zalgo and i am here to you out on this amazing day. to answer your question, yes, nonzero numbers can have a greatest common factor and that would be 1. still don't get it? let me considering every number is divisible by 1 and hence every number has 1 as a factor of theirs. so, if 2 nonzero numbers didn't share any gcf (greatest common factor), they would still have a factor in common and that would be 1.

i hope that this ! : p

"stay and stay proud! " - zalgo

(by the way, do you mind marking me as brainliest? i'd greatly appreciate it! mahalo! x3)