Final answer:
To make the submarine's final position -5 units, we can use different combinations of groups of floats and anchors.
Step-by-step explanation:
To make the submarine's final position -5 units, we can use groups of floats and anchors.
Let's start with the groups of 3 floats. If we use 1 group of floats, the submarine will move forward by 3 units. If we use 2 groups of floats, the submarine will move forward by 6 units. And so on.
Now let's consider the groups of 4 anchors. If we use 1 group of anchors, the submarine will move backward by 4 units. If we use 2 groups of anchors, the submarine will move backward by 8 units. And so on.
By combining different numbers of groups of floats and anchors, we can get different expressions to make the submarine's final position -5 units.