Jolly

By direct use of the definition of a derivative, the derivative of f(x) = 1/x ?

are those who produce seeds for farmers considered farmers themselves?

I struggle with understanding when to use an apostrophe with singular words ending with S.. Like for example, Class or Hughes.. Would it be Class's or Class'.... Hughes's or Hughes'?

write a pair of equations that have exactly two solutions. (at least one equation is not linear) any links to help?

I run a book club with n people, not including myself. Every day, for 100 days, I invite members in the club to review a book. What is the smallest positive integer n so that I can avoid ever having the exact same group of members over all 100 days?

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