Yep!
Some people use it every day and don't realize it. Electricians use it all the time with V = IR.
I had a roommate that did flooring for a living. He said he never understood algebra, but I gave him an example of how he used basic algebra everyday (figuring square footage) but just didn't know it and it finally clicked for him. A lot of people get hung up on the x's and y's and don't realize those variables are just "place holders" for whatever value they need to plug in for them.