Select the factors of 6ab + 3ay − 2bx − xy

I am not sure what is the answer but i learnt to do this type of question this way:

firstly rewrite the equation
6ab-2bx+3ay-xy

then take the common out
2b(3a-x)+y(3a-x)

since the eqn in the brackets are the same, the final answer is written as:
(2b+y)(3a-x)

Exponential growth
exponential growth (based on natural logs)

exponential decay (based on natural logs)

exponential decay