Using the zeroes concept, it is found that function B could be defined by a cubic equation.
- The degree of a function depends on the number of zeroes, for example, a first degree function has one zero, a quadratic equation has two, cubic equation has three, and so on...
- On a graph, the number of zeroes is the number of times the function crosses the x-axis.
In this problem:
- In Option A, it crosses four times.
- In Option B, it crosses three times.
- In Options C and D, it crosses two times.
Hence, option B is a cubic equation.
To learn more about zeroes of a function, you can take a look at https://brainly.com/question/16948935
