You begin solving the equation 4 – 5x = 59 by subtracting 4 from both sides. which is the best choice for step 2?
a) subtract 55 from both sides.
b) multiply both sides by –5.
c) divide both sides by 55.
d) divide both sides by –5.

Is this a polynomial function? i need to know asap

Ascatter plot with a trend line is shown below. which equation best represents the given data? y = x + 2 y = x + 5 y = 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.