Answer:
Total number of pastries that will be made from at least 3/8 pound of dough is 8.
Step-by-step explanation:
It is given that the line plot shows the weight of the dough for each pastry.
From the given box plot it is clear that,
Number of pastries with weight 1/4 pound = 4
Number of pastries with weight 3/8 pound = 3
Number of pastries with weight 1/2 pound = 5
We know that

We need to find the number of pastries that will be made from at least 3/8 pound of dough. It means the number of pastries whose weight is 3/8 or more than that.
N = Number of pastries with weight 3/8 pound + Number of pastries with weight 1/2 pound
N = 3 + 5
N = 8
Therefore, total number of pastries that will be made from at least 3/8 pound of dough is 8.