Pls help me! This is a ab calculus problem

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

Write an equation for the function that includes the points (2,100)and (3,100)

Find cot x if sin x cot x csc x = √2