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

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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

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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look for the pattern

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month of February we have 253 lets call that first month okay
ok
so month 1 we have 253 month 2 we 0.3x253+50 month 3 we have 0.3x(0.3x253+50)+50
lets see the pattern after n months
kk
or you could just check if those options work
check for first month n=1
oh they made n=0 the first month not n=1 let's check for n=0 do we get 253 for what option
A?
oh well all of them actually have f(0)=253 for n=0 do n=1 and check
ok giv a sec
the right one has to have for n=1 f(1)=125.9
oh no error i used 253 instead of 235
for n=1 we should get f(1)=120.5 not 125.9 that was a mistake ok
ok
A and B or not good since they don't work out
same for D if you cheched
so C works as an answer
ok thank you
if 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....
f(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(n-1)+50

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