Make a list of factors of -20 cause i'm too lazy✌️✌️

Find the greatest common factor of the polynomial: 10x^5+15x^4-25x^3 10x^5 x^3 5x^3 5

How to use order of operation in 20 divide by 4 multiply 5 = 1

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year