Answer:
(A)74
Explanation:
Let her average score on the last two tests = x.
The six scores will now be: 82,78,87,73, x and x.
Since the average score for her first six chemistry tests = 78

We then solve for x.

Her average score for the last two tests is 74.
9 and 3 are the only common factors between 54 and 90
Answer:
25 more inches
Step-by-step explanation:
Not possible, we can't answer the question if we can't see the dimensions.
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