rename ads -> offers, add new listing (syd)

src/offers/history-science-and-languages/adrianriskin-kolektiva-social.md

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+---
+title: pure math Q&A
+handle: "@AdrianRiskin@kolektiva.social"
+url: "kolektiva.social/@AdrianRiskin"
+blurb: I am happy to help with K-12 math, undergraduate pure math, e.g. college algebra, precalc, calc, discrete, intro to proof, abstract algebra, number theory, analysis, etc. Also graduate level graph theory.
+date: 2026-05-01
+---

src/offers/history-science-and-languages/history-science-and-languages.11tydata.js

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+export default {
+	tags: [
+		"history science and languages"
+	]
+};

src/offers/history-science-and-languages/june-weirder-earth.md

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+---
+title: math tutoring
+handle: "@june@weirder.earth"
+url: "weirder.earth/@june"
+blurb: "a math PhD helping you learn any mathematics from middle school to grad school"
+rate: "120 USD/hr but lower if you need"
+date: 2026-05-04
+---

src/offers/history-science-and-languages/minmi-sfba-social.md

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+---
+title: Applied statistics
+handle: "@minmi@sfba.social"
+url: "sfba.social/@minmi"
+blurb: "I am happy to answer any questions about statistics and data analysis. Whether it’s homework, curiosity, trying to understand a study or run an analysis, happy to share what I know!"
+date: 2026-05-02
+---

src/offers/history-science-and-languages/tonyamarie-chaosfem-tw.md

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+---
+title: Ask a math teacher
+handle: "@TonyaMarie@chaosfem.tw"
+url: "chaosfem.tw/@TonyaMarie"
+blurb: "Need help with your kid's homework? Going back to school? Retired teacher will help with your math questions up through basic college level!"
+date: 2026-05-01
+---