Consider the system of linear equations. 2y = x + 50
3y = 3x +015
Which statements about the system are true? Check
that apply
O The system has one solution
The system graphs parallel lines.
O Both lines have the same slope.
O Both lines have the same y-intercept.
O The equations graph the same line.
O The solution is the intersection of the 2 lines.

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.