Amazing photography studio takes school pictures and charges $20 for each class picture. the company sells an average of
12 class pictures in each classroom. they would like to have a special sale that will them sell more pictures and
actually increase their revenue. they hired a business analyst to determine how to do that. the analyst determined that
for every reduction of $2 in the cost of the class picture, there would be an additional 5 pictures sold per classroom.
a. write a function to represent the revenue for each classroom for the special sale.
b. what should the special sale price be?
c. how much more will the studio make than they would have without the sale?

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

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?