The table below shows the different times it takes paula to drive to work each day depending on the rate at which she drives.

rate vs. time
rate (mph)
30
40
50
60
time (h)
2.5
1.875
1.5
1.25

if one day paula rides a scooter to work at a constant rate of 24 miles per hour, how long should it take her?
2.625 hours
2.75 hours
3.125 hours
3.75 hours

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.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.

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3