Belle eats 4 dog biscuits and 2 rawhide bones every evening. If each rawhide bone is $1, and each dog biscuit is $0.25, then how much does it cost, in dollars, to feed Belle these treats for a week?
A week's worth of rawhide bones cost 1*2*7=<<1*2*7=14>>14 dollars.
A week's worth of dog biscuits cost 0.25*4*7=<<0.25*4*7=7>>7 dollars,
Thus, in total, it cost 14+7=<<14+7=21>>21 dollars
#### 21