Question

a plumber charges a service call fee of $25 plus $40 for each hour she works. which variable is the independent variable?

Answer 1

The independent variable is 25 (the service fee) as it doesn't depend on another thing. The $40 an hr is dependent because it depends on how many hrs the plumber works.

Answer 2

I think I'd be the $40 she charges every hour she works. If this is multiple choice mind drop-in the options