Suppose there are n people in a group, each aware of a scandal nobody else in the group knows about. These people communicate by telephone. When two people in the group talk, they share information about all scandals each knows about. For example, after the first call, two people each know about two scandals. The gossip problem asks for G (n), the minimum number of telephone calls that are needed for all n people to learn about all of the scandals. Prove that G(n) = 2n − 4 for n ≥ 4.

How to determine whether two known pairs of points are on the same line.

Gexpressions: practice question 3 of 5 jackson wants to study the popularity of his music video by tracking the number of views the video gets on his website. the expression below represents the total number of views that jackson's video receives n days after he begins tracking the nu views, where b is the rate at which the number of views changes. alb)" select the statement that would accurately describe the effect of tripling a, the initial number of views before jackson beginst the rate at which the number of views changes, b, will triple. the total number of views the video has after n days, a(b)", will not change. the total number of days since jackson begins tracking views, n, will be reduced by one-third. the total number of views the video has after n days, alb)", will triple. submit

X+y=-4 x-y=2 use elimination with adding and subtraction