Paige rolles a number cube sixty-four times. the number 4 comes up fourteen times. the number 3 comes up six times rounded to the nearest whole percent, what is the experimental probability of rolling a 3 or 4?

The experimental probability is the number of times the desirable event happened over the times attempted.
So in this case, the desirable event happened 20 times, and it was attempted 64 times.
Since you want a percent, just divide, and you get about 31%.