A color photograph taken with a digital camera is converted into a digital format using 4 x 10^0 bytes per pixel. Photographs taken with the camera each have 2.2 x 10^6 pixels. How many bytes are there in one photo?
bytes/pixel * pixel = bytes (see how 'pixel' cancels out?)
4 x 100 * 2.2 x 106 = 8.8 x 106 bytes