If any one has a crazy urge to help a lost soul with her math PLEASE READ THIS!!?

Question

How do i do this? and what should i get? ok this is what the math question says "In 1983, 57.5% of college students gradated in 5 of fewer years of study . In 1997 that # had fallen to 52.8% What was the change of rate for percent of students graduting within 5 years from 1983 to 1997? Hint write the points

thanx so much to any one who can help me out!

Answer 1

The rate of change would be the just be slope of the line connecting these points.
(1983, 57.7) and
(1997, 52.8)
so do
(57.7 - 52.8) / (1983 - 1997) =
4.7/(-14) ~= -0.3357142
You're probably in what they now call "pre calculus"
This is just college algebra taught to sufficent standards that you'll be ready for calculus when you get out, and introducing some words and ideas from calculus, such as rate of change for slope.
I see a few people have told you the rate of change is 4.7% Someone's even giving a thumbs up to those who say 4.7% and a thumbs down to those who say you have to divide by the change in time.
4.7% what it would be if your time interval was one year. But since your time interval is 14 years you have to divide by 14. Remenber, yo'ure treating this as the slope of a line, where your independant variable is changing by 14 and your dependant variable is changing by -4.7
Slope or rate of change = (change in dependant variable) divided by (change in independant varialbe)
It gets confusing when people give different answers, when you know in math there can be only one right answer. This is why you need to understand your math so that you can recognise which answers are right and which are wrong, and eventually be able to figure out the right answers for yourself.

Answer 2

1) Let x be the percentage of students graduating with 5 or fewer years of study

2) x decreases from 57.5 to 52.8 in 15 years

3) x decreases by 4.7% / 15 years = 0.313333333333 % / year

Answer 3

To find rate of change

(57.5-52.8/52.8)=8.9% (percent of change, not percent from 100)

1997-1983=14 years

8.9%/14 years = 0.64% per year

Wow, doesn't anybody work with percentile anymore?

Answer 4

You would say that in 14 years (1997-1983), the percent changed 4.7% (57.2-52.8). Therefore, on average it changed .335% (4.7/14) every year. That is the rate of change.

Answer 5

you get the points (1983,57.5) and (1997,52.8).

for every 1997-1983 = 14 years, the percentage drops 57.5-52.8 = 4.7 points.
so the rate of change is 4.7 points every 14 years = 4.7/14 = .336 points / year

Answer 6

Subtract 52.8 from 57.5 = 4.7
In math you have to learn what to omit in the question. A lot of what it says has nothing to do with figuring out the problem.

Answer 7

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Answer 8

Minus 57.5 % and 52.8 % and it equals 4.7 % was the rate of change.

Answer 9

I think you make both percents into fractions and then subtract them. Then make that # a percent.

That's the way I would do it, but i'm not positive

Answer 10

4.7 % if your talking about the rate of change