Question

Neil started a stamp collection with 12 stamps. Every week, he adds 4 more stamps to the collection. Which function f represents the relationship between the number of stamps (s) and the number of weeks (w)?
help???

Answer 1

s = f(w) = 12 + 4w

w = f(s) = 12s + 4

s = f(w) = 12 + 4s

w = f(s) = 12w + s

s = f(w) = s – 12

Answer 2

someone please help i think i know but not sure

Answer 3

Hi welcome to openstudy!

w= # of weeks
s=# of stamps

you are looking for a function that represents this function (or the # of stamps) depending on the number of weeks you have. so from this you know that s=f(w).

Next, you know that the constant term or the thing that can't be change is the starting number of stamps which is 12. Then, every week, you add 4 stamps, so that will be 4w

Combine these things and you'll end up with........?

which one do you think?

Answer 4

i think the first one??

Answer 5

right! :)

Answer 6

awesome! thank you!

Answer 7

no problem ;)

Answer 8

Ryan opens a bank account with $50. Each month he deposits an amount that doubles his savings. Ryan gets $2 from the bank each month as an incentive for maintaining this savings pattern. Which recursive function represents the amount in Ryan’s account in any month?

Answer 9

i got this wrong last time :(

Answer 10

next = 2 × now + 2, starting at 50

next = 2 + 2, starting at 2

next = now + 2, starting at 50

next = 2 – now, starting at 50

next = 2 × now, starting at 2

Answer 11

can you help please

Answer 12

give me a sec. i'll try to understand it first :)

Answer 13

okay thank you

Answer 14

wouldnt it be the first one??

Answer 15

starting at 50, doubles his savings every month, $2 from the bank each month

yes, I think the first one makes more sense than the rest

Answer 16

yes it makes the most sense!

Answer 17

can you help on another one?

Answer 18

If f(x) = 2x2 + 3x and g(x) = x – 2, what is (f + g)(2)?

Answer 19

16

14

12

10

8

Answer 20

f(x)+g(x)
\(2x^2 + 3x + x – 2\)
f(2)+g(2)
\(2(2)^2 + 3(2) + 2 – 2=?\)

Answer 21

14?

Answer 22

yep! keep up the goodwork ;)

Answer 23

i passed the quiz thank you so much!!

Answer 24

i wish you could help me on this question im doing now :/

Answer 25

oh is this a quiz?
if so, I cannot help you because they said that we are only allowed to help other users with their assignment/projects but not with any kind of assessments (quiz, test exam) because it is considered as cheating :/ sorry.

if this is assignment I can help you, if I still have more time (I have to go to my night school)

Answer 26

its the tutorial to help before my big test. so it really isnt a test i should say its just helping me to pass the test once i get to it

Answer 27

ok