I don’t think so, a graph is a function only if the vertical line passes through the graph at one distinct point.
But I’m not exactly sure cus I’m still learning geogebra
Multiply $530.40 by 3/4. You get the equation

If you simplify this, you get the solution of $397.80
$397.80
Answer: 11/20
55/100 simplified is 11/20
I believe it is B. I could be wrong but I am hoping that you get it right