Create a function that has a derivative of f(x) = 2x + 1 at a given input value of your choice.

F(x) = (x^2) + x + C                at (1,1)

1 = 1 + 1 + C

-1 = C

so,

F(x) = (x^2) + x - 1

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct