A. Yes, there are no y-values that have more than one x-value B. No; there are y-values that have more than one x-value.
C. Yes; the graph passes the vertical line test.
D. No; the graph fails the vertical line test.

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

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.