Final answer:
To determine how many loaves of marble rye bread to bake, calculate the expected value for each possible demand.
Step-by-step explanation:
To recommend how many loaves of marble rye bread to bake, we can use the concept of expected value. The expected value is calculated by multiplying each possible demand by its respective probability, and then summing up these values. For this problem, we have three possible demands: 25, 50, and 75 loaves. The probabilities for these demands are 30%, 25%, and 45% respectively.