You get paid on the first day of each month You cash your check and pay all of your essential expenses. You keep the balance in your "discretionary spending " envelope. A scatter plot shows the number of days that have passed since you were paid and the amount left in your discretionary spending envelope. The explanatory xvariable is the number of days that have passed. The response y variable is the amount left in your envelope . Is there a positive or negative correlation ? Explain