Write 1/64^2 using a negative exponent

Ineed if you could explain and give me the answer you! this needs done

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

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.