Gracie's grandmother gave her 40 stamps. Then, each month Gracie adds 30 stamps to her collection.

Coordinate grid labeled points (0, 40), (1, 70), (2, 100) and (3, ?)

Part A
How many stamps does Gracie have after 3 months?
Enter your answer in the box.
stamps

Part B
What does the point (2, 100) represent on the graph?
A.

The number of months since Gracie began adding to her stamp collection.
B.

The number of stamps in the collection after 2 months is 100.
C.

The number of stamps Gracie added to her collection in 2 months is 100.
please help!

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