The shape is closed because the sides touch.
There are 4 possible outcomes based on 2 types of wash (deluxe wash & other wash) and 2 vacuum uses (with vacuum and no vacuum). Since customers are equally likely to choose between these, we can run a uniform distribution from 1-4, where each represents one outcome. For example, 1 = deluxe+vacuum, 2=deluxe+no vacuum, 3=other wash+vacuum, 4=other wash+no vacuum. Then after running a large number of simulations (ex. 1000), count the number of the desired result (which is the number 2), and divide by the total number. This will give the probability.
The square root of 9 is 3
Answer: $29.43
Step-by-step explanation: 3 shirts for $9 each adds up to $27. 9%= 0.09 so you can multiply the cost of the shirts by 1.09 because that is the base price plus the sales tax. Then you get $29.43.
