When an item is marked up by a certain percent and then marked down by the same percent, is the sale price equal to the price before the markup and markdown

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.

In physics class, eva noticed the pattern shown in the diagram on the oscilloscope. which equation best represents the pattern shown on the oscilloscope? 1. y = sin x + 1 2. y = 2 sin x + 1 3. y = sin 1/2x + 1 4. y = 2 sin -1/2x + 1