Roberto purchased airline tickets for his family of 4. the tickets cost $1,250. the airline also charged a luggage fee, bringing the total cost to $1,400. what is the percent increase in the cost due to the luggage fee?
the cost increase was 12%.
the cost increase was 20%.
the cost increase was 48%.
the cost increase was 89%

Which conjunction is disjunction is equivalent to the given absolute value inequality? |x+2|< 18

Drag the tiles to the table. the tiles can be used more than once. nd g(x) = 2x + 5 model a similar situation. find the values of f(x) and g(x) let's say that the functions f(x for the given values of x. fix)=5(4) * g(x) = 2x+5

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.