Answer:
5y
Step-by-step explanation:
The reason it is 5y is because for every week, Diana buys 5 sodas which means you would have to multiply. For example, if you wanted to find how many sodas Diana drank in 7 weeks you would multiply 5(7) to get 35 sodas in 7 weeks.
because each week she buys five so you multiply 5 by however many weeks.
perpendicular is the opposite, so -3
your sister would be 35
Very interesting observation
~ Maria
