Which one is a rational number ? a. 4.6785432 b 3.34343434 c. 2/2

C

Step-by-step explanation:

A rational number can be written as the ratio of integers

A. 4.6785432

I am assuming that this number continues on forever and you could not put the overbar on it.   It so then it is not rational

If this number is as written then we could write it as 46785432/10000000  and it would be a ratio of integers

b 3.34343434

I am assuming that this number continues on forever and you could not put the overbar on it.   It so then it is not rational

If this number is as written then we could write it as  a ratio of integers

c. 2/2

This is always a ratio of integers since 2 is an integer

The maximum depth that he will reach is -125 meters.

The first thing you should realize is that this is a quadratic equation and the graph will be a parabola.

We can simply the equation to:

y = (1/20)x^2 - 5x

Now, use -b/2a to find the x-value of the vertex which is 50. Then, input 50 back into the equation to get -125 for the maximum depth.