anonymous
  • anonymous
Need Help With number 28!! Fan And Medal
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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freckles
  • freckles
let's do a question with integer numbers only molli purchased 9 applies for $9. What do you get when you divide that dollar amount by the number of apples your bought? What is $9/9=?
anonymous
  • anonymous
1

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freckles
  • freckles
what do you think that answer means
freckles
  • freckles
like say you were going to the market and the person tells you each apple costs a 1 dollar and you buy 9 apples how much do you think you are going to spend?
anonymous
  • anonymous
$9
freckles
  • freckles
right so doing $9/9 was to actually figure out how much you spend on each apple right?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
@freckles
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freckles
  • freckles
how much does it cost for one month?
anonymous
  • anonymous
$14
freckles
  • freckles
well and to even do that one month we have to pay the membership fee which is 25 dollars so one month will cost us 14+25 right?
freckles
  • freckles
how much will do two months cost us ?
freckles
  • freckles
we never have to pay the membership fee again just that one time so doing another month will just be an addition 14 to the 14+25 correct?
anonymous
  • anonymous
yes
freckles
  • freckles
one month is 14+25 two months is 14+14+25 three months is ?
anonymous
  • anonymous
im not sure?
freckles
  • freckles
each month costs an additional 14 dollars
freckles
  • freckles
you are adding 14 each time
anonymous
  • anonymous
14+14++14+25?
anonymous
  • anonymous
14+14+14+14+25
freckles
  • freckles
so for one month we only have to pay 14+25 but if we do just two months the total amount we pay is 14+14+25 and if we just do three months the total amount we pay is 14+14+14+25 and if we just do four months the total amount we pay is 14+14+14+14+25 ... anyways.. before we continue another way to say 14+14 is 2(14) another way to say 14+14+14 is 3(14) another way to say 14+14+14+14=4(14) -- so let's resay what we have: so for one month we only have to pay 14+25 but if we do just two months the total amount we pay is 2(14)+25 and if we just do three months the total amount we pay is 3(14)+25 and if we just do four months the total amount we pay is 4(14)+25 -- so if we just do n month the total amount we pay is ? (before you answer this question look at the pattern above.. what number is the only thing that is changing)
anonymous
  • anonymous
the numbers 25?
freckles
  • freckles
but I see a 25 in every expression
freckles
  • freckles
look at the number in front of 14
anonymous
  • anonymous
ohhhhh yeahh
freckles
  • freckles
remember 14 is 1(14) if we just do one month we have 1(14)+25 if we do two months we have 2(14)+25 if we do three months we have 3(14)+25 so if we n months we have . .............
anonymous
  • anonymous
4(14)+25
freckles
  • freckles
well that is for 4 months what about for n months
freckles
  • freckles
instead of putting 4 where you put 4 put a...
anonymous
  • anonymous
n
freckles
  • freckles
yes
freckles
  • freckles
The algebraic expression you are looking for is ...
freckles
  • freckles
come on just change 4 to n
anonymous
  • anonymous
if we just do one month we have 1(14)+25 if we do two months we have 2(14)+25 if we do three months we have 3(14)+25 n(14)+25
freckles
  • freckles
you did it! if we just do one month we have 1(14)+25 if we do two months we have 2(14)+25 if we do three months we have 3(14)+25 so if we four months we have 4(14)+25 ... and if we do n months we have n(14)+25 n(14)+25 is the same as saying 14n+25 which is how it is normally written so you have f(n)=14n+25 where f represents the dollar amount you pay for doing n months.
freckles
  • freckles
for example if n=1 f(1)=14*1+25=14+25=39 this says if we just do one month at the gym we will have to pay 39 dollars f(2)=14*2+25=53 this says if we just do two months at the gym we will have to pay 53 dollars anyways they want you to find f(6)
anonymous
  • anonymous
6f
freckles
  • freckles
no no...
freckles
  • freckles
f(n)=4n+25 so f(6)=4*6+25
freckles
  • freckles
this says if we do just six months we have to pay 4*6+25
anonymous
  • anonymous
f= 49 6
freckles
  • freckles
you mean f(6)=49 right!
anonymous
  • anonymous
yes
freckles
  • freckles
and yes if we just do six months we have to pay 49 dollars
freckles
  • freckles
darn
freckles
  • freckles
for some reason I change 14 to 4
freckles
  • freckles
f(n)=14n+25
anonymous
  • anonymous
wow lol
freckles
  • freckles
f(6)=14(6)+25
freckles
  • freckles
lol maybe I got tired of writing the extra digit over and over :p
anonymous
  • anonymous
f= 109 6
freckles
  • freckles
write it as f(6)=109
freckles
  • freckles
so this means if we just do 6 months we only have to pay 109 dollars
anonymous
  • anonymous
ok
freckles
  • freckles
Anyways the algebraic expression we used was f(n)=14n+25 where f represents the dollar amount of doing n months at the gym
anonymous
  • anonymous
ok
anonymous
  • anonymous
thanks alot bro @freckles

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