At the start there are 24 flower pots line on the steps to decorate the stairs players to remove 3 Pots per hour for the next few hours what is the initial value

Which of these choices show a pair of equivalent expressions?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.