x - # of days 0 a. 7 b.
x - # of days
a. x - 7
b. x - b (where b is the number of days)
x - # of days 0 a. 7 b.
0
0
2
2
50
50
3
3
5
5
12
12
13
13
The expressions x - 7 and x - b (where b is the number of days) would evaluate to:
a. 0 - 7 = -7
b. 0 - b = -b
2a. 2 - 7 = -5
2b. 2 - b = 2 - b
50a. 50 - 7 = 43
50b. 50 - b = 50 - b
3a. 3 - 7 = -4
3b. 3 - b = 3 - b
5a. 5 - 7 = -2
5b. 5 - b = 5 - b
12a. 12 - 7 = 5
12b. 12 - b = 12 - b
13a. 13 - 7 = 6
13b. 13 - b = 13 - b