On day 1,a school play has 80 adults buy tickets and 52 students buy tickets and they make a total of $768.On day 2,92 adults buy tickets and 26 students buy tickets and they make a total of $768.From this information, what is the cost of an adult tickets.

Umm.. just started this 2day and its not on my notes(p′︵‵。)

Taking algebra two apex courses and need with these questions

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