Okay, algebra teacher handed me this but i haven't any idea how to solve any of it and i can't contact anyone in my class to me with it. can someone me?

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

she will do 520 after 52 weeks

hope this : )