Acommittee of three people is selected at random from a set consisting of six teachers, five parents of students, and seven alumni. a. what is the probability of the event that the committee consists of all teachers? b. what is the probability of the event that the committee has no teachers?

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Could somebody me with this radical simplification?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12