### Instruction: A designer has 3 fabric colors he may use for a dress: red, green, and blue. Four different patterns are available for the dress. If each dress design requires exactly one color and one pattern, how many different dress designs are possible?### Response: To find the total number of possible dress designs, I need to multiply the number of choices for each factor: color and pattern.
For color, there are 3 choices: red, green, or blue.
For pattern, there are 4 choices: A, B, C, or D.
So, the total number of dress designs is 3 times 4, which is 12.