20 divided by c write an algebraic expression for the word expression ​

What is the relationship between all triangles that can be drawn given the same three angles

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 - )

Pls brainliest will be awarded if answer is correct