Explain why it is necessary to rename 4 1/2 if you subtract 3/4 from it

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.

Asandwich shop has 18 tables. each table seats up to 4 people. to find the greatest number of people that can be seated, you can solve p4 ≤ 18. which step is the best way to solve the inequality? plz asap i repeat plz