Answer:
f=3n, where n is the number of cakes.
Step-by-step explanation:
Yes, the equation f=3n, where n is the number of cakes, models the situation.
Answer:
3,-7
Step-by-step explanation:
One fifth is the same as

and 15 is the same as

So just times across,

×

Resulting in(1 x 15= 15, and 5 x 1= 5),

If you need/want to reduce it, divide both numbers by 5. Leaving you with the simplified answer of

or 3. Either answer works. :)
If you have any questions, just comment them down below :)