1) c
2) b
3) b
Step-by-step explanation:
2) Range is the largest number minus the smallest number. So, 12-5=7
3) Mean is all the numbers added up, then divided by how many numbers there are. So,
5 + 9 + 15 + 18 + 22 = 69
69 / 5 = 13.8
And 13.8 rounded to the nearest whole number is 14.