1. The problem asks to find when the shop makes a clear profit of 3000 monthly using the function from question 5. 2. Since the function from question 5 is not provided, let's assume the profit function is $P(t)$ where $t$ is months and $P(t)$ is in thousands. 3. To find when profit is 3000, solve the equation: $$P(t) = 3$$ 4. Without the explicit function, we cannot solve algebraically. Please provide the function $P(t)$ from question 5. 5. For question 7, the average rate of change from $t=0$ to $t=2.5$ is: $$\frac{P(2.5) - P(0)}{2.5 - 0} = \frac{P(2.5) - P(0)}{2.5}$$ 6. Again, without $P(t)$ values, this cannot be computed. Please provide the profit function $P(t)$ to proceed with exact calculations.