Final answer:
The correct option is b.400−5x+2y, where x is the number of members and y is the number of chocolate bars sold.
Step-by-step explanation:
The correct option is b.400−5x+2y, where x is the number of members and y is the number of chocolate bars sold.
To evaluate the budget, we look at the coefficients of x and y in the expression. The coefficient of x is -5, which means for each member added, the budget decreases by $5. The coefficient of y is 2, which means for each chocolate bar sold, the budget increases by $2.
Therefore, the correct expression represents the relationship between the number of members, the number of chocolate bars sold, and the budget.