Foundation November 2021 Paper 1 Q4
4 The table shows the temperatures recorded at midnight and at midday for each of five North American cities on a Monday one week.
| City | Midnight temperature (°C) | Midday temperature (°C) |
|---|---|---|
| Boston | –2 | 14 |
| Houston | 11 | 20 |
| Chicago | –8 | 7 |
| Detroit | –7 | –1 |
| New York | 0 | 12 |
(a) Which city had the lowest midnight temperature? (1)
(b) Find the difference between the midnight temperature and midday temperature for Boston. (1)
From Monday to Thursday, the midday temperature in Detroit increased by 2°C each day.
(c) Work out the midday temperature in Detroit on Thursday. (2)
| Scheme | Marks |
|---|---|
| Chicago | B1 |
| (1) |
Notes
B1: Accept misspellings
| Scheme | Marks |
|---|---|
| 16 | B1 |
| (1) |
Notes
B1: accept –16
| Scheme | Marks |
|---|---|
| \(-1 + 2 \times 3\) | M1 |
| 5 | A1 |
| (2) | |
| (4 marks) |
Notes
M1: for clearly adding 3 lots of 2 or the sequence –1, 1, 3, 5