Can someone pls help me with this?

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

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

What is the value of x in the following equation? -3x-2=2x+8