The school glee club is collecting money for a sing-a-thon. their goal is to collect $105. so far, they have collected x dollars each from 15 people and y dollars each from 10 people. which expression represents how much more money the club needs to collect to reach the goal?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

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.

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?