Hel plsss
How can you tell without doing division if a number is a multiple of 9?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

How do i solve uniform motion problems?