there are 3 "x" above the 3/4 mark, meaning there are 3 buttons that are 3/4 of an inch, now if she lines them up, what is their length total?
[tex]\bf \cfrac{3}{4}+\cfrac{3}{4}+\cfrac{3}{4}\implies \cfrac{3+3+3}{4}\implies \cfrac{9}{4}\implies 2\frac{1}{4}[/tex]