They don't tell you which is the dominant trait, but they do tell you they are both homozygous at both genes
This means, you have only one gen on each.
Vestigial: vv
Wild: ww
Hairy: hh
Bold: bb
The male is vvhh.
The female is wwbb.
If you cross them you'll have:
vvhh x wwbb = vw hb, vw hb, vw hb, and vw hb
So, you have 100% of having an offspring genotypically vwhb.