Is 120.4 hundredths or ones or tens or hundreds

Can (3,5 and square root 34) be sides on a right triangle?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)