What is the sum of the fractions? Use the number line to help find the answer.

Three-fifths + (Negative StartFraction 7 over 5 EndFraction
A number line going from negative 2 to positive 2 in increments of one-fifth.

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