H=53....factor expression
Yes. 1.403 is 0.003 more than 1.4 .
The unit ratio is defined as the total cost divided by the number of oz.
So, the large popcorn has a unit cost of

meaning that 1oz of pop corn costs 7 cents.
Similarly, the small popcorn has a unit cost of

meaning that 1oz of pop corn costs 8 cents.
So, the large popcorn has a lower unit rate.
1 pound is 0.453592 kilograms
so 8.4 pounds is 3.81018 kilograms
You would cross multiply and make sure the units are lined up with each other
1

then you would cross multiply and get 3.81018