Answer: Choice A)

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Work Shown:

This is not the only way to solve for H.
First let's put them all over 100.
-

would change to -

-

to -

-

to -
-

to -

Then if we put them from least to greatest it would be from highest to lowest (since they are negatives)
-

, -

, -

, -
The answer would be B
Sorry don’t know this one
Answer:
2 months
Step-by-step explanation:
started with 20, an added 30 each month so 30 plus 30 equals 60, 2 months add it to 20, 60 plus 20 is 80. other girl started with nothing and added 40 each month so 40 plus 40 equals 80. also 2 months