Which of the following equations are true for the number 9? Select all that apply.

A.
4
÷
□
=
9
4
B.
1
9
=
□
÷
9
C.
7
÷
□
=
7
9
D.
□
÷
1
9
=
81

Shannon mary and john earn a weekly allowance ahannon earns the amount that is 2/3 of what john earns mary earns an amount that is 1 2/3 of what johns earns 20 dollars a week who eaens the greatest allowance and who earns the least