Answer:

Step-by-step explanation:
Answer:
He should give his sister 41.50 dollars.
Step-by-step explanation:
Y = -4x/5 + 13/5 would be the answer to 4x+5y=13
Answer:
If written in Standard form this equation would be:

Now i graphed this equation in Desmos and here is what i got:
Hope this helps!