Find an expression that equals B – 20 in standard form

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).

this "question" looks more like a project is there any other info you can give me about this. it could be too complex for someone else to do on this website

96 cm is the answer.