Answer:
14mn
Step-by-step explanation:
It’s not my answer but I think it’s correct!
The fourth one down is the correct answer trust me
I am finding the answer right now but there is a website that you can use for math that really helps. It's called Desmos.
First,you have to divide and see which number can go into 45 , 15 , and 30 what ever your answer is thats how many of each item you can put on each shelf. In your case it would be 15
