Amy is doing a science experiment on how a certain bacterium reacts to an antibiotic. she has 3 dishes of identical bacterium samples with 14 bacteria in each dish. she gives an antibiotic to all of the bacteria in one dish. all of the treated bacteria died, and the bacteria in the other two dishes survived.

what type of sampling is demonstrated in the situation above?
negative sampling
convenience sampling
random sampling
census

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

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?