x - # of days 0 a. 7 b.

Answer 1

x - # of days

a. x - 7
b. x - b (where b is the number of days)

Answer 2

x - # of days 0 a. 7 b.

0
0

2
2

50
50

3
3

5
5

12
12

13
13

Answer 3

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