we are given
sticker price is $20,950
invoice price is $17,750
mark up price = sticker price - invoice price
mark up price = 20950-17750
mark up price = 3200
% mark up = [( mark up price)/(invoice price) ]*100
now, we can plug values
and we get
[tex] =\frac{3200}{17750} *100 [/tex]
[tex] =18.028 [/tex] %
so, option-C.....................Answer