Answer:
A measure of capacity or volume in the metric system equal to one-tenth (10-1) of a liter. One deciliter is also equal to 6.1022 cubic inches, or 3.38 fluid ounces
Step-by-step explanation:
Bagels = 4d - 3
Four times means 4d and you subtract 3 because Geoff has three less than 4 times.
You can see that the term 
appears in both equations. In this cases, we can leverage this peculiarity and subtract the two equations to get rid of the repeated term. So, if we subtract the first equation from the second, we have
Now that we know the value of 
, we can substitute in any of the equation to deduce the value of 
: if we use the first equation, for example, we have
21 degrees C ????????????
Because if there is no more supplies for the sale, the sale can't apply to nothing!
