please help with some digital audio and video problem!

I will thumbs up in rating!

1. If a 2 hour stereo audio signal is sampled with a sample rate of 44.1 kHz and a bit depth of 16 bits per sample, how much storage in bytes is required to hold a non-compressed version of the data?

2. An image has 8 bits per channel of color (RGB) and 8 bits for transparency. How many levels of transparency does the image support?

3. You have two displays that you are observing as you walk by them. One display gives a consistent image as you walk by it. The other display goes from an image that is tinted slightly green to a good looking image and back to slightly green again as you walk by it.

4.Which of the following is true of the display for which you observe the green color shift as you walk by it?

A) It has a larger pixel geometry than the other display.

B) It has a slower refresh rate than the other display.

C) It has a smaller viewing angle than the other display.

D) It uses a different color space than the other display.

4) A smartwatch has a display with a resolution of 272 px by 340 px. The dimensions of the active area of the display panel is 26.52 mm tall and 21.22 mm wide. What is the pixel density of the display in ppi?

5) How many times more pixels are there in a UHD video frame than are in FullHD video frame?

A) 2 x

B)3 x

C)3.5 x

D) 4 x

E) 4.27 x

F) 6 x

G) 8 x