Answer:
- not possible: 1, 2, 4, 5, 8, 11
- possible: all others
Step-by-step explanation:
Obviously, all multiples of 3 and 7 can be paid.
1 cent can be added by adding a 7-cent stamp and taking away two 3-cent stamps. 2 cents can be added by adding three 3-cent stamps and taking away one 7-cent stamp. Hence any value more than 7 +2(3) = 13 cents can always be accommodated.
Amounts that are impossible:
1, 2, 4, 5, 8, 11 cents
All other positive integer amounts are possible.
Answer:

Step-by-step explanation:
(-2,1)=(x1,y1)
(4,5)=(x2,y2)
d=?
d=
Answer:
i dont understand what your asking
Step-by-step explanation:
So
1 gallon = 4 quarts
1 quart = 2 pints
g = 4q = q + q + q + q
g = 2p^+2p^+2p^+2p^
1 gallon equals 8 pints
2 gallons equal 16 pints
THe answer is 16 pints