
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
There is a parabolic arch bridge over a river. When the distance between the water surface and the top of the arch is 5 meters, the width of the water surface is 8 meters. A small boat, which is 4 meters wide and 2 meters high, has a portion of 0.75 meters above the water surface after being loaded. How many meters must the water level rise until the small boat can no longer navigate under the arch?

Present the answer in LaTex format: \boxed{Your answer}
user