Answer:
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D. 16.8 units
A radius is half of the diameter, so to get the answer all you need to do is multiply the length of the given radius by 2.
8.4x2= 16.8
45 / 9 = 5
55 / 5 = 11
Eric worked 11 hours to prepare 55 kilograms of dough.
Answer: 0.7 is the rate change between the two points
