Take the number with the variable on one side and the numbers alone on the otherside of the equal sign but don't forget to change the negative and positive sign
Step-by-step explanation: remember you are averaging so you add the two numbers and divide by the number of numbers, 2. So, 15+11=26, 16 divided by 2=13
Let X be the random variable denoting the net gain(in dollars) for a single trial(one bet).
Assuming that each number in the wheel is equally likely, probability of the outcome being a victory is and probability of failure is . For a win, X takes value 35 and for a loss X takes value -1. So the model is,