find the 97th term of the arithmetic sequence -16, 2, 20, −16,2,

Really need on these. i have no idea what to do

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36