10. BALL The function h = -16t2 + 25t + 5 can be
used to represent the height h in feet of a juggler's ball
after t seconds of being tossed in the air by a juggler 5
feet tall. Graph the function. Use your graph to estimate
the height of a juggler's ball that has been in the air for
1.5 seconds.
Height (ft)
0
2 4 6 8 10 12 14 16
Time (s)

answer: the equation matches the regression

step-by-step explanation:

452,489 to the nearest thousand is 452,000

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.