Answer:
7
Step-by-step explanation:
It is the same number, all you have to do is write out the factors but if its ever the same number just know itll always be that number
Answer:
a) 
b) what?
c) -70
Step-by-step explanation:
If you have any questions feel free to ask in the comments - Mark
sorry for the terrible answer
He mails
(1000) x (the number of weeks he keeps it up)
of them.