All you have to do, is combine like terms. Let's go through it:

Arrange it so you can easily combine like terms:

So, your answer for the sum is 1) 7x² - 10x + 2
Answer:
Yes
Step-by-step explanation:
Yes, the question asks for an average not the rainfall on one specific day, therefore it is a statistical question.
(accidentally answered as a comment)
Answer:
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Step-by-step explanation:
Its a Parellelogram, as the opposite sides are equal.
Answer:
The answer is 450
Step-by-step explanation:
V = l*w*h
V = 15*10*3
V= 450