In the third century BCE, Apollonius of Perga asked how many circles one could draw that would touch three given circles at exactly one point each. It would take 1,800 years to prove the answer: eight ...

Can you chip in? The Internet Archive is introducing peer-to-peer (P2P) fundraising —a giving platform that allows individual supporters to host personalized campaigns to fundraise for the Internet ...

https://doi.org/10.2307/2946556 • https://www.jstor.org/stable/2946556 Copy URL ...

Foundations for algebra -- Solving equations -- Solving inequalities -- An introduction to functions -- Linear functions -- Systems of equations and inequalities -- Exponents and exponential functions ...