For a presentation Sandy creates a visual representation of

For a presentation, Sandy creates a visual representation of a total cost function. The graph of the total cost function y = g(x) is shown in the following picture.

What is the range of this function? If you write your answer in the form a<=y<=b what are the values of a and b?

Solution

range is nothing but  a set containing the output values produced by a function

so check where the y axis value is less that will be \'a\'

and check where the y axis value is more that will be \'b\'