Two angles are a linear pair. the measure of the first angle minus 39 is equal to twice the measure of the second angle. what are the measures of both angles?

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

When y’all answer can y’all explain too !

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?