well i think you multiply 4 by 125 but i don't know and its not one of my options i have

Answer 1

Here's your original problem:

125 pounds decreased by 4%

You need to convert the percent to a decimal. Move the decimal point two places to the left. 4% = 0.04

Multiply 125 by 0.04

Answer 2

Subtract your answer from 125.