A community for students.
Here's the question you clicked on:
 0 viewing
emogirl100
 one year ago
A store had 235 MP3 players in the month of January. Every month, 30% of the MP3 players were sold and 50 new MP3 players were stocked in the store.
Which recursive function best represents the number of MP3 players in the store f(n) after n months?
f(n) = 0.7 × f(n − 1) + 50, f(0) = 235, n > 0
f(n) = 237 − 0.7 × f(n − 1) + 50, f(0) = 235, n > 0
f(n) = 0.3 × f(n − 1) + 50, f(0) = 235, n > 0
f(n) = 237 + 0.7 × f(n − 1) + 50, f(0) = 235, n > 0
emogirl100
 one year ago
A store had 235 MP3 players in the month of January. Every month, 30% of the MP3 players were sold and 50 new MP3 players were stocked in the store. Which recursive function best represents the number of MP3 players in the store f(n) after n months? f(n) = 0.7 × f(n − 1) + 50, f(0) = 235, n > 0 f(n) = 237 − 0.7 × f(n − 1) + 50, f(0) = 235, n > 0 f(n) = 0.3 × f(n − 1) + 50, f(0) = 235, n > 0 f(n) = 237 + 0.7 × f(n − 1) + 50, f(0) = 235, n > 0

This Question is Closed

emogirl100
 one year ago
Best ResponseYou've already chosen the best response.0@xapproachesinfinity

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1look for the pattern

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1month of February we have 253 lets call that first month okay

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1so month 1 we have 253 month 2 we 0.3x253+50 month 3 we have 0.3x(0.3x253+50)+50

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1lets see the pattern after n months

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1or you could just check if those options work

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1check for first month n=1

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1oh they made n=0 the first month not n=1 let's check for n=0 do we get 253 for what option

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1oh well all of them actually have f(0)=253 for n=0 do n=1 and check

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1the right one has to have for n=1 f(1)=125.9

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1oh no error i used 253 instead of 235

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1for n=1 we should get f(1)=120.5 not 125.9 that was a mistake ok

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1A and B or not good since they don't work out

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1same for D if you cheched

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1so C works as an answer

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1if you tried the find the pattern you would have gotten the same formula doing month 0 we have 235 month 1 we have 0.3x235+50 month 2 we have 0.3x(0.3x235+50)+50 and so on....

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1f(0)=235 f(1)=0.3x235+50=0.3xf(0) f(2)=0.3x(0.3x235+50)+50=0.3xf(1)+50 f(3)=0.3xf(2)+50 we go following the pattern tell n f(n)=0.3xf(n1)+50

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.1@emogirl100
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.