Can you help me with this

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points

5cakes cost 3.50 how much do 7 cakes cost