Im losing my point but i need them answers plz help !

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

Talia grouped the terms and factored out the gcf of the groups of the polynomial 15x2 – 3x – 20x + 4. her work is shown below. (15x2 – 3x) + (–20x + 4) 3x(5x – 1) + 4(–5x + 1) talia noticed that she does not have a common factor. what should she do?

Write a linear funtion f with the values f(2)=-1, and f(5)=4