Which line is parallel to the line given below y=5/2x-7

The graph shown is the graph of which function?

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.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c