) A botanist was measuring how tall her plant grew. After two weeks it had
9.78 inches. The second week alone it had grown 2.88 inches! How much grow the first week?
the total that the plant grew in 2 weeks : 9.78 inches.
The second week it grew: 2.88 inches.
So to figure out , how much it grew the first week
we need to take the total that it grew the second week from the total of the 2 weeks:
9.78 - 2.88 = 6.9 inches