What is the name of the mathematical model in the image?

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

What is the value of x when x + 7 = 21?