The points {(-3,2), (0,1), (4,5)} are on the graph of function f. What are the coordinates of these three points after a horizontal stretch by a factor of 3, followed by a reflection across the x-axis? A) (-9,-2), (0,-1), (12,-5)
B) (-9,2), (0,1), (12,5)
C) (-3,-6), (0,-3), (4,-15)
D) (-1,-2), (0,-1) (4/3,-5)
First correct answer gets brainliest

Which of the following points is collinear with (-2,1) and (0,3)

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.

Twelve less than a number is at most 20