I think you would most likely add all of them well I think
Answer:
<h2>12</h2>
Step-by-step explanation:

Write a recursive and explicit formula for each option.
Save a nickel on the first day of the month and then double the amount each day for a month
=> a1 =0.05
=> a2 = a1* 2 = 0.05*2
=> a3 = a2*2 = a1* 2*2
..............................................
=>recursive an =
=> explicit an = 0.05*
Start their savings by saving $10 on the first day and then $10 each day of the month
=> a1 = 10
=> a2 = a1 + 10 = 20
=> a3 = a2 +10 = 20 +10 =30
........................................................
=> recursive an = 
=> explicit an = 10 + 10( n-1)
Hope it will find you well.
1:
E F and J K
2:
Point A to point B
question 3 to 5 i dont know the answer to
Answer:
9
Step-by-step explanation:
the decimal always goes between the numbers that arent 0s