What is the equation for calculating the normal file size in graphics?

The correct approach to calculate the normal file size in graphics involves multiplying the number of pixels by the bit depth. This formula is based on the understanding that both the number of pixels and the bit depth directly contribute to the amount of data that a graphic file contains.

The number of pixels indicates the total amount of individual points of color in the image, while the bit depth refers to the number of bits used to represent the color of each pixel. This means that higher bit depth allows for a greater range of colors at each pixel. Therefore, by multiplying these two factors together, you obtain the total data size in bits required to accurately represent the image.

For example, if an image is 800 pixels wide and 600 pixels tall, it has a total of 480,000 pixels. If the bit depth is 24 (commonly used for true color images), the calculation for file size would be 480,000 pixels multiplied by 24 bits, resulting in a file size of 11,520,000 bits, or approximately 1.44 megabytes.

The other answer choices do not represent a valid method for calculating file size in this context, as they either misuse arithmetic operations or misunderstand the relationship between pixels and data representation in graphics.