How to calculate IQR

Please help me

Abag has more green balls than blue balls, and there is at least one blue ball. let bb represent the number of blue balls and let gg represent the number of green balls. let's compare the expressions 2b2b and b + gb+g. which statement is correct? choose 1

What is the 12th term of b(n)=-4-2(n-1)

To determine the number of deer in a forest a forest ranger tags 280 and releases them back