Whole numbers are closed under multiplication and addition.
whole numbers are closed under ADDITION and MULTIPLICATION operations.
let us denote the number of pet fish in the united states by f. it is given that 1
let us denote the number of pet reptiles in the united states by p. it is given that 2
now, to find how many pet fish and reptile pets are in the united states all together in the scientific notation, we will have to add equation 1 and equation 2. even before we do that we can see that the "order of magnitude" of f is significantly than that of p. thus, we can straightforward say that the answer will approximately be:
let us show in a detailed :
thus, the answer in scientific notation is:
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