Question

The very rigorous medical program at a local university has a 30% drop out rate for each year. If the school admits 1,000 freshmen, how many diplomas will need to be ordered 4 years later?
(show your work please :) )

656 diplomas must be ordered

240 diplomas must be ordered

410 diplomas must be ordered

316 diplomas must be ordered The very rigorous medical program at a local university has a 30% drop out rate for each year. If the school admits 1,000 freshmen, how many diplomas will need to be ordered 4 years later?
(show your work please :) )

656 diplomas must be ordered

240 diplomas must be ordered

410 diplomas must be ordered

316 diplomas must be ordered @Mathematics

Answer 1

I got 240?

Answer 2

240

Answer 3

is correct

Answer 4

what is the passing percentage ?

Answer 5

I got 240 also

Answer 6

err 240.1

Answer 7

Did you guys use the formula A = P(1 - r)^t or you did it another way?

Answer 8

I simply did (((1000 * .7)*.7)*.7)*.7

Answer 9

Since it was only 4 years that seemed the quickest way

Answer 10

Oh so you cant do it with 1000*.3 *.3 *.3*.3 right?

Answer 11

pretty much

Answer 12

\[ 1000 (1 - 0.3)^4 \]

Answer 13

Oh ok, thank you :)

Answer 14

Yea, the formula works just as well

Answer 15

How about this problem:
The number of milligrams of a drug that remains in a patient’s system after t hours is given by the function A(t) = Iert. Juan was given 500 milligrams of medicine which leaves his bloodstream at a rate of 20%. How much of the medicine remains in his system after 6 hours?


133.90 mg

150.60 mg

99.20 mg

111.58 mg


I got b

Answer 16

what is A(t) = Iert ?

Answer 17

exatly

Answer 18

Oh its A(t) = l e ^rt

Answer 19

The e is the e^x on the calculator usually.

Answer 20

not sure but i think it's d

Answer 21

r = rate
t = time
e = 2.71828...
I = 500

Answer 22

again not sure

Answer 23

d

Answer 24

How did you get that answer?

Answer 25

oh wait at a rate of 20% mistake

Answer 26

Yeah at the rate of 20%

Answer 27

Ooops..I put in 5 hours and not 6. Still, I'm getting 1.66........

Answer 28

egggsactly

Answer 29

stilll think d

Answer 30

Yeah, i forgot to mention that also the exponent has to be negative, sorry

Answer 31

Lol, that fixes it :) 150.6

Answer 32

\[A = 500*e^{-rt}=500mg*e^{-.2*6hr}=150.597106mg = 150.6mg\]

Answer 33

haha, thank you :) sorry for not saying that part :( but thank you