Can someone answer this asap for ! what is the greatest common factor of 30b^2, 80b^2, and 20b^3?

Which graph represents 2x-5y< 15

Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41