Answer:
Experiment
Step-by-step explanation:
By going out of her way to make different tests and giving it to different portions of the class, she's creating and running an experiment.
1. 100
2. 10000
3. 10
Yes, Nan pays $25 more
144 hours /24 hours per day = 6 days exactly
$50 + (5 x $25) = $175
145 hours 24 hours per day = 6 days and one hour (must pay for 7 days)
$50 + (6 x $25) = $200
$200 - $175 = $25 more
