Answer:
the awncer to your question is x=3
Step-by-step explanation:
Answer:
420 miles/7 hours = 60 miles per hour.
The correct option is Option 4: 
Step-by-step explanation:
Given
Length of box = l = ab
Width of box = w = a+5b
Height of box = h = 2b^2
The volume of a box is given by:

Putting the values

Hence,
The correct option is Option 4: 
Keywords: Volume, Polynomials
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I think the answer might be 21?
The values 35 and 25 would make the answer to this 0