What is 33/10 as a mixed number

If value of cos330° is √3/2 then find tan165°.

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b