This depends on what are the values of Tonya's data. We can say that it is precise if the all data points are almost located at one area and it can be near or far from the accepted value. We can say that it is accurate when the data are near or equal to the accepted value.
I think is c because your seeing how your using you’re time.
Work = (force) x (distance)
(550 newtons) x (0.5 meter) = 275 joules each lift .
(275 joules/lift) x (10 lifts) = 2,750 joules of work all together.
Power = (work done) / (time to do the work)
= (2,750 joules) / (20 seconds)
= 137.5 watts . (about 0.18 horsepower)
