Answer:

Step-by-step explanation:
The equation needs to have a product of 3.15.
And the equation has to be a decimal equation. So we have o use numbers such as 10, 100...




We can write as many equation as this.
120 cupcakes
Even # rows
Odd # columns
12: 1, 2,3,4,6, 12 (integers?)
I see only one arrangement with odd column & even rows
3 columns, 40 rows
That's mainly because 120 is an even number.
Last one :) shshshdhdbdhd