Need plz show your work how you did it

Provide an example of a trigonometric function and describe how it is transformed from the standard trigonometric function f(x) = sin x, f(x) = cos x, or f(x) tan x using key features.

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.