r + 7 ≤ 12

Question

*
r ≥ 19
r ≤ 19
r ≤ 5
r ≥ 5

n - 9 ≥ 12
*
n ≥ 3
n ≤ 3
n ≤ 21
n ≥ 21

Answer 1

For the first problem "r + 7 ≤ 12", if we subtract 7 from both sides, we have:

r ≤ 5

Therefore, the correct answer is "r ≤ 5".

For the second problem "n - 9 ≥ 12", if we add 9 to both sides, we have:

n ≥ 21

Therefore, the correct answer is "n ≥ 21".