5.378 E9 = 5.378 × 10⁹ = 5,378,000,000
The correct one would by 9h because you are asking how much will Ursula make per hour. So let's say that h is 10, then in order to know how much Ursula makes per hour, you have to add 9 ten times. A short way to do that would be to simply multiply 9 with 10 so that you can get the answer of 90. It cannot be 9/h because then answer will be much lower than it is supposed to be. So the answer to the question is really 9h.
Answer:
11. the first one 12. the last one
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Answer:
2 and 4 :)
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