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Yes.  To calculate the total litres in an open garden pond

Then later to calculate the dosage to treat algae using barley straw extract.

During my CS degree I asked one of my tutors (real old school, eccentric math/programming nerd and I loved him for it) why we were bothering learning older programming languages that weren't so sought after (or so I thought at the time in my ignorance...), he replied "We aren't teaching you languages, we are teaching you how to think like a programmer".

That always stuck with me, and riffing on what others have already said, I realized from a lot of my studies going right back to high school math, the things that benefited me the most was not necessarily the subject matter itself, but the way it shaped my logical and critical thinking faculties. Algebra in that way is Class A simple logic; if x + y = z, then z - x = y and z - y = x must be true. And scale up until you get Alphabet soup! Honestly, these days I think everyone could benefit from learning logic...

And remembering good ole' BEDMAS is critical in programming. Because if you forget, your compiler doesn't...

@floydbloke I ashamed to say it took me 3 or 4 passes of the cartoon to get the joke... love it

x = the number of times I have found myself repeating the phrase "an artifact of reporting" when discussing the case numbers in the last week and how they don't tell the whole story. Solve for x

I use algebra regularly, often when explaining non-mathematical issues with numbers.

The best part of relatively difficult subjects is when you can involve humour.

Because although puns just make me numb, algebraic puns make me number.