Functions!

I did it in like 2 minutes while I was waiting for my ride to practice, so you might wanna double check it.
 
just get a graph paper/chart paper and do it...its not hard man, im in grade 9 and we did this stuff and its like wayyy easy
 
should of asked me 2 years ago when i was in AP Trig....i knew everthing....now i dont...:(

yeah same here, my memory is the worst and I haven't had a decent maths lesson for a fair while so I've basically forgotten everything. I haven't had a use for long multiplication so far so I think I'd even struggle remember that...

If I knew how, I'd do that though.
 
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