Question

I give medals! Omg I need help!!! I am so confused!

Answer 1

ignore E!

Answer 2

Best answer gets a medal please help me!

Answer 3

third time i have seen this exact problem
should make a template or something
lets see if i can find my previous answer

Answer 4

ok

Answer 5

nope ok we can do it

Answer 6

you got the first one nor no?

Answer 7

no

Answer 8

ok the bracelet is $85 and charms are $15 each
suppose you bought the bracelet and one charm
how much would you pay?

Answer 9

$100

Answer 10

right
and suppose you bought the bracelet and 2 charms, how much would you pay?

Answer 11

$115

Answer 12

sure
last one:
suppose you bought the bracelet and 5 charms, how much would you pay?

Answer 13

$160

Answer 14

good
how did you figure it out?

Answer 15

For this last one I did 15*5 to get 75 and then did 85+75

Answer 16

exactly!

Answer 17

So how do I answer A?

Answer 18

so if you bought say \(x\) charms, you would do the same thing except with an \(x\) instead of a \(5\)

Answer 19

oh

Answer 20

you would multiply it by 15, then add 85

Answer 21

so I would say 85+15x=160

Answer 22

it would just be
\[y=15x+85\] if \(y\) is the cost

Answer 23

oh

Answer 24

the cost depends on the number of charms, it is not always $160

Answer 25

And would I basically say what I said for you for the explaining part?

Answer 26

or.. how would I explain it?

Answer 27

if you want to write it in function notation you would write
\[f(x)=15x+85\]

Answer 28

ok

Answer 29

i would write exactly the discussion we just had
one charm cost 15 + 85 = 100
2 charms cost 15*2 + 85 = 115
5 charms cost 15*5+85 = 160
and in general
x charms cost 15x+85

Answer 30

ok!

Answer 31

Now I don't understand the next part at all...

Answer 32

domain means what kind of numbers you put in the function, in this case the possible number of charms you can buy

Answer 33

oh so x

Answer 34

you could buy 0, 1, 2, 3, 4, ... up until whatever you think a reasonable number of charms is

Answer 35

I would say 4 or 5. And then I just explain why?

Answer 36

they have to be whole numbers i bet you can fit more than 4 or 5 on a bracelet

Answer 37

ok

Answer 38

but the domain is not one number, it is all possible numbers, say
0,1,2,3,4,5,6,7,8,9,10

Answer 39

So any number and explain

Answer 40

no list all the possible numbers

Answer 41

oh..... ok so like 1-10

Answer 42

and explain why right

Answer 43

the explanation is that it is the number of charms you can buy
that is why they are whole numbers, you can't by half a charm for example

Answer 44

then for C find the most number of charms they could get

Answer 45

oh makes sense now

Answer 46

So I would say that the domain would be whole numbers and list the numbers I could use and why it makes sense to use a whole number because I can't have half a charm

Answer 47

yeah for C solve
\[15x+85=250\]

Answer 48

ok I can do that later. Explain D please

Answer 49

So for D I would find the cost and we did that so it would be $160 right?

Answer 50

lol we already did D way way back at the beginning!

Answer 51

yeah right

Answer 52

cool. And then the flyer just has different prices. $100 for the bracelet and $12 per charm

Answer 53

right, so what would the equation for that be?

Answer 54

I'm supposed to give advice on which store has a cheaper bracelet. Should I say 5 charms again? And like how do I explain? I'm supposed to give advice and justify my answer...

Answer 55

100+12x=y

Answer 56

got it

Answer 57

as for which store to use, you will pay the same if
\[15x+85=12x+100\] so solve that for \(x\)

Answer 58

oh yeah just like you said
you pay the same if you buy 5

Answer 59

so I got x=5

Answer 60

more than 5, \[12x+100\] will be cheaper
less than 5 \[15x+85\] will be cheaper

Answer 61

ok thanks

Answer 62

yes good work

Answer 63

yw