Answer: look at the minimum in the graph
Step-by-step explanation: Minumum as in of the graphed thing and the minimum/maximum of it or the answer to y or x because that’s impossible
20 times 10=200 fluid ounces
128 fluid ounces per gallon
1 gallon is too little
2 gallons is to much
but you can't buy 1 and 72/100 of a bottle so just buy 2
2 bottles
29/4 hopes this help sorry if I’m wrong