Is -3(x+2)=-6-3x no solution ,infinite soultion ,one solution?

What is the simplified expression for 6(2(y+x))

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 x = y² - 9 opens: a.)up b.)down c.) right d.)left