Answer:
a) 16, 19, 22, 25, 28, 31, 34, 37, 40
b) 1, 3, 9, 27, 81, 243, 729, 2187
a) Add 3 on every number.
b) Multiply every number by 3.
13-11 = 2
15-13 = 2
17-15 = 2
As you can see, the numbers increased by two. hence the answer is 2.
12) mode= no mode
mean=62
median=81
13) mode=74
mean=78
median =74
14) mode=80
mean=73
median=70
15)mode=70
mean=74
median=75
16)mode-no mode
mean=51
median=45
17)mode=86
mean=55
median=77
18)mode=no mode
mean=79
median=78
19)mode=70
mean=77
median=79
hope that helps :D
Step-by-step explanation:
