Please help, I will give brainleist!

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

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Find │7│. a. 1 over 7 b. –7 c. 7 asap i always mark brailiest who me so