Final answer:
The effect on income from accepting the special one-time order of bird feeders would be a $210,500 increase.
Step-by-step explanation:
To find the effect on income, we need to calculate the current income and compare it to the income after accepting the special one-time order.
Currently, Bluebird is producing and selling 75,000 units at $7.50 per unit, resulting in a total revenue of $562,500 (75,000 * $7.50).
The total production cost for these units is $300,000 (75,000 * $4.00), leaving a profit of $262,500 ($562,500 - $300,000).
If Bluebird accepts the additional business of 15,500 units at $3.50 per unit, they would generate an additional revenue of $54,250 (15,500 * $3.50).
Since there are no incremental fixed costs, the total production cost for the additional units would be $84,250 (15,500 * $2.75).
This results in a profit of $210,500 ($54,250 - $84,250).
Therefore, the effect on income from accepting the special offer would be an $210,500 increase.