Question

find the difference between the highest and lowest recorded temperatures. °c

Explanation:

Step1: Identify highest temperature

From the graph, the highest temperature is $29^\circ$C (around 2pm - 3pm).

Step2: Identify lowest temperature

The lowest temperature is at 9am, which is $14^\circ$C (since it's between 10 and 15, closer to 15 but let's check the graph: the starting point is around 14? Wait, no, looking at the y - axis, the first mark is 10, then 15, 20, 25, 30. The 9am temperature is at the point between 10 and 15, let's see the grid. Wait, maybe the lowest is 14? No, wait the graph starts at 9am with temperature around 14? Wait, no, the y - axis: the 9am temperature is at the point where the y - value is 14? Wait, no, let's re - examine. The highest temperature is 29 (since it's just below 30), and the lowest is 14? Wait, no, the 9am temperature: looking at the graph, the first point (9am) is at y = 14? Wait, no, the vertical axis: 10, 15, 20, 25, 30. The 9am temperature is at the level of 14? Wait, maybe the lowest is 14 and highest is 29? Wait, no, maybe the lowest is 14 and highest is 29, so difference is 29 - 14 = 15? Wait, no, maybe I misread. Wait, the 9am temperature: let's count the grid lines. The y - axis has lines: 10, then each small line is 1? Wait, the graph: at 9am, the temperature is 14 (since from 10 to 15, there are 5 small lines, so each small line is 1. So 10, 11, 12, 13, 14, 15. So 9am is at 14. The highest is 29 (since it's at the level of 29, just below 30). Then 29 - 14 = 15? Wait, no, maybe the highest is 29 and lowest is 14, so 29 - 14 = 15? Wait, but let's check again. Wait, maybe the lowest is 14 and highest is 29, so 29 - 14 = 15. Wait, but maybe the lowest is 14 and highest is 29, so difference is 15. Wait, no, maybe I made a mistake. Wait, the 9am temperature: looking at the graph, the first point (9am) is at y = 14, and the highest is at y = 29. So 29 - 14 = 15. Wait, but let's check the grid. Alternatively, maybe the lowest is 14 and highest is 29, so 29 - 14 = 15. Wait, but maybe the correct lowest is 14 and highest is 29, so difference is 15. Wait, but maybe I was wrong. Wait, the 9am temperature: let's see, the y - axis: 10, 15, 20, 25, 30. The 9am temperature is at the point where y = 14 (since it's 4 units above 10). The highest is at y = 29 (1 unit below 30). So 29 - 14 = 15.
Wait, maybe another way: the lowest temperature is at 9am, which is 14°C, and the highest is at 2pm - 3pm, which is 29°C. So the difference is 29 - 14 = 15.

Wait, maybe I misread the lowest temperature. Let's look at the graph again. The 9am temperature: the point is at y = 14 (since from 10 to 15, there are 5 intervals, so each is 1. So 10, 11, 12, 13, 14, 15. So 9am is at 14. The highest is at 29 (since it's at the level of 29, just below 30). So 29 - 14 = 15.

Step1: Determine highest temperature

From the graph, the highest temperature is $29^\circ$C (close to $30^\circ$C).

Step2: Determine lowest temperature

From the graph, the lowest temperature (at 9 am) is $14^\circ$C.

Step3: Calculate the difference

Subtract the lowest temperature from the highest temperature: $29 - 14 = 15$.

Wait, but maybe the lowest is 14 and highest is 29, so the difference is 15.

Answer:

15