Answer:
Hello,
Step-by-step explanation:
Let's assume A,B,C the 3 explorers and X,Y,Z the 3 guides.
Only A and X can operate the boat.

I hope you will understand the travels
You have to look for -3 on the x axis, and then proceed vertically (in this case upwards) until you meet the graph.
We land about 1/2 square above the 12 mark on the y axis. Since one square is 1/2 unit, a half square would be 1/4 unit.
So, we can estimate 
Food is the answer for this question
First ask your self how many ounces are in 1 cup?
8 ounces
So to find how many ounces are in 8 cups, you have to multiply how many ounces in one cyp (8) by 8
8×8=64
64 ounces