A constant ,a variable or product of a number and variable is called variable

In two or more complete sentences describe how to determine the appropriate model for the set of data, (1,1), (3,2), (6,3), (11,4).

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)