Which of the following results in a sum or a product that is rational choose all that apply

3.12 x 1.4
√9 x √25
√2 x √3
4 + 5
n x 3

Molli purchased 9 apples for $3.96 molli divided $3.97 by 9 why my molli perform this calculation

in order to find out how much she paid per apple
in order to find the total number of apples purchased
in order to calculate the total amount that she owes
in order to calculate how much money she has left

2 answers

For the second one it is d. In order to find out how much she paid per apple.
1 idk
2 d