Using the weighed mean, it is found that Tom's GPA for the semester is of 3.545.
In this problem, the data-set is composed by the grades, which are:
Hence, his GPA is of:
[tex]GPA = \frac{4(4) + 2(1) + 3(3) + 4(3)}{4 + 1 + 3 + 3} = 3.545[/tex]
Tom's GPA for the semester is of 3.545.
You can learn more about weighed mean at https://brainly.com/question/26153667