Answer:
It could be to: collect data from a sample of every twentieth student who arrives at school one day
A function that gives the amount that the plant earns per man-hour t years after it opens is 
<h3><u>Solution:</u></h3>
Given that
A manufacturing plant earned $80 per man-hour of labor when it opened.
Each year, the plant earns an additional 5% per man-hour.
Need to write a function that gives the amount A(t) that the plant earns per man-hour t years after it opens.
Amount earned by plant when it is opened = $80 per man-hour
As it is given that each year, the plants earns an additional of 5% per man hour
So Amount earned by plant after one year = $80 + 5% of $80 = 80 ( 1 + 0.05) = (80 x 1.05)
Amount earned by plant after two years is given as:

Similarly Amount earned by plant after three years 

Hence a function that gives the amount that the plant earns per man-hour t years after it opens is 
Answer: 5:8
Step-by-step explanation:
By reducing both sides equally, the ending answer is 5:8
(There can be many answers to your question but the one i told you is the most reduced one)
Answer:
She's being paid six hours per hour
Step-by-step explanation:
She's being paid six hours per hour
72/6 = 6