To find the number of dozen donuts the junior class needs to sell to make at least $1,000, we can set up the following inequality:
Let \( d \) represent the number of dozens sold.
The revenue from selling \( d \) dozens of donuts at $12 per dozen can be represented as:
\[ 12d \geq 1000 \]
Now, we can solve for \( d \):
- Divide both sides of the inequality by 12:
\[ d \geq \frac{1000}{12} \]
- Calculate \( \frac{1000}{12} \):
\[ \frac{1000}{12} \approx 83.33 \]
Since \( d \) must be a whole number (you can't sell a fraction of a dozen), you would need to round up to the next whole number.
Thus, the solution is:
\[ d \geq 84 \]
The correct response is:
12d ≥ 1000 and 84