Find the midpoint of the line segment with the endpoints (-6,-8) and (-2,-6)

Do u just plot the numbers on the graph like (1,

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

How do i find the missing angle measure in a polygon