Functions are used to represent graphs, and vice versa.
The function represented by the graph is 
The graph (see attachment) is an absolute value graph.
An absolute value graph is represented as:

Where

The vertex is the minimum or the maximum point on the graph.
So, we have:

The function becomes

The function also passes through the point (-1,0).
So, we have:


Remove the absolute bracket

Subtract 3 from both sides

Divide both sides by 3

Substitute -1 for (a) in 

Hence, the function represented by the graph is 
Read more about absolute value graphs at:
brainly.com/question/3381225
You need to divide by the number 2.3 and 62.50 and then round to the nearest cent
There go your answer to your question
The picture shows the answer I got!
Also! For the future, I use a site called
math way and it is great for problems like these.