Answer: (B) -625
<u>Step-by-step explanation:</u>
Given the sequence {-500, -100, -20, -4, -0.8, ... }, we know that that the first term (a) is -500 and the ratio (r) is 
Input those values into the Sum formula:

Answer:
One step Equations:
1. x=4
2. x=18
3. x=3
4. ×=50
Two Step Equations:
1. x= 7
2. x= -4
3. x= 24
Variations on Both Sides:
(I'm not sure if these are right but the answers above are for sure correct)
1. x= 4.5
2. x= -2
65-9=56
56 divided by 8 is 7
So they will need 7 tents
Next multiples of the unit fraction 1/5 are
2/5
3/5
4/5
5/5 = 1
Hope this helps.. :)