I believe is 251.2 sorry if it’s to late
Well, If there is 16 packs and 8 in each pack then you multiply 16 and 8 which is 128, then add the extra 9 cans of juice and the answer is 137. Have a good rest of your day/night!!
Let x be total trip distance
We know that 0.56*x = 816
X= 816/0.56 =1457.14 about 1457 miles
Note: The function is below the graph, so it is less than.