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Key here is the order of operation.g(4) =2x4 - 5=8-5=3fg(4) = f(3)=15/3=5gf(-30)f(-30)=15/-30=-1/2gf(-30)=g(-1/2)=2x-1/2 -5=-1-5=-6gf(x)f(x)=15/xg(15/x)=2*15/x -5=30/x -5

The passé simple, or passé historique, is a more formal or literary past tense in French. It conveys past, completed actions - not unlike the passé composé. You will often find it in literary texts, part...

Some exam boards include a translation of a short text, usually journalistic, from German into English as part of their reading exam. This exists to test your reading comprehension, as well as your abilit...

Injection moulding is a forming process in which plastic products can be created. There are 4 key stages involved in the process:The first stage is feeding plastic granules into a hopper which will keep t...

Why do we use object pronouns?: to make phrases more natural/fluid and to limit repetition. For example, it would be very unnatural to say ‘I bought the chocolate ...