Choice A is the correct answer. Profit is calculated as Revenue minus Costs.

1. Revenue: $25 per cake ($25c$)
2. Variable Cost: $8 per cake ($8c$)
3. Fixed Cost: $600 rent
4. Profit Equation: Profit = Revenue - Variable Cost - Fixed Cost
5. Inequality: $(25c - 8c) - 600 \geq 1000$
6. Simplify: $17c - 600 \geq 1000$
7. Add 600: $17c \geq 1600$
8. Divide by 17: $c \geq 94.11...$
9. Round up: Since you can't sell a fraction of a cake, $c \geq 95$

?�� Strategic Tip: Net profit per unit is (Selling Price - Cost per unit). Total Profit = (Net per unit × Quantity) - Fixed Costs.

Choice B is incorrect because it ignores the variable cost of ingredients ($25c - 600 \geq 1000$). Choice C is incorrect because it ignores the rent ($17c \geq 1000$). Choice D is incorrect because while the setup is correct, Choice A is the solved answer, and D is just the setup (though mathematically valid, A is the explicit solution requested by "How many cakes..."). Wait, usually solving is preferred. Let's re-read. "How many cakes..." implies finding the value. A is the best answer. D is the setup.

Correction: Choice D is the setup, but A is the solution. The question asks "How many cakes", so A is the answer.