How you read 0.312 and 0.5

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

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

What is the measure of angle tvu shown in the diagram below