Like so:
Can you take it from here?
Try multi[plying out the following:
How about the following:
You could just use g(x) = -3x+11, of course, to get the same answer!
Here's a graphical check showing the correctness of Melody's answer.
As follows:
The angle sum formula should work:
\(\sin {(\frac{2\pi}{15})}\cos {(\frac{4\pi}{5})}-\cos {(\frac{2\pi}{15})}\sin {(\frac{4\pi}{5})}\\ =\sin {(\frac{2\pi}{15})}\cos {(\frac{12\pi}{15})}-\cos {(\frac{2\pi}{15})}\sin {(\frac{12\pi}{15})}\\ =\sin {(\frac{-10\pi}{15})}\\ =\sin{\frac{-2\pi}{3}}\\ = -\frac{\sqrt 3}{2}\)
I suspect the following is what is required:
I think N($3,456, $478) is meant to indicate a normal distribution with mean $3,456 and standard deviation $478 (or possibly a variance of $478, as both forms are common, and the poster hasn't specified which).
I'd do it as follows:
+33661 
