Answer
$$3.19$$
Work Step by Step
We first multiply the GPA number associated with each grade by the number of credits for that grade:
$$ = (3)(3) + (4)(4) + (2)(3) + (4)(2)+ (3)(4) \\ = 51$$
Dividing by the number of credits:
$$ = \frac{51}{16} \\ =3.19$$