Question

Help please ?

Answer 1

@ganeshie8 I only have 4 more questions ! D:

Answer 2

good :)

Answer 3

Yay so you're willing to help ? :)

Answer 4

yes why not for a brilliant student like u, its easy to explain :)

Answer 5

Great ! Thank you so so much ! You have no idea how much I appreciate it :)

Answer 6

ok, so Juliana has $24 in her pocket. and she wants to knw how many text messages she can send

Answer 7

Right

Answer 8

she knows that \(f(x) = (3x+2)/4 \) gives the cost, when u put number of messages x into the equation

Answer 9

for example, if u have texted 10 messages cost wud be :-
f(10 ) = (3(10)+2)/4
= 32/4
= 8

so it wil cost u $8 just to text 10 msgs... pretty costly !!

Answer 10

Okay makes sense !

Answer 11

but thats not wat we want,
here our task is to find a function, into which we can plugin the MONEY we have, and it should tell us how many TEXTS we can message

Answer 12

I tried working it out and got 18.5 ..

Answer 13

right ?

Answer 14

I think I'm getting ahead of myself here haha i apologize

Answer 15

And yes , right :)

Answer 16

its okay, but 18.5 messages for $24 doesnt look correct

Answer 17

let me show u how to do this step by step

Answer 18

Please and thank you !

Answer 19

given equaiton :-
\(y = f(x) = (3x+2)/4 \)

here, x is number of texts, y is dollars

Answer 20

since you wanto know how many texts u can send, you need to solve x above.

Answer 21

\(y = (3x+2)/4\)

solve x

Answer 22

How would I start off ?

Answer 23

multiply 4 both sides

Answer 24

4(3x+2) ?

Answer 25

\(y = (3x+2)/4\)

multiply 4 both sides

\(4y = 3x+2\)

Answer 26

next, subtract 2 both sides

Answer 27

\(y=(3x+2)/4 \)

multiply 4 both sides

\(4y=3x+2\)

subtract 2 both sides

\(4y-2 = 3x\)

divide 3 both sides

\(\large \frac{4y-2}{3} = x\)

Answer 28

now, replace x and y (just do it, il tell you later why :))

Answer 29

replace x & y

\(\large \frac{4x-2}{3} = y \)


\(\large y = \frac{4x-2}{3} \)

Answer 30

Isn't it to put the equation in the correct form ?

Answer 31

thats the required function, where u need to plugin x=$24, and it gives u number of text messages u can send !

Answer 32

exactly ! you're right, we replace x and y, to put the function in right form :)

Answer 33

Yay :D

Answer 34

put x = 24, and see how many messages she can send

Answer 35

Wait so that's the answer ?

Answer 36

yes thats the required function ! since the question wants u to explain, explain wat we did so far :)

Answer 37

btw, for $24, she can send :-

\(\large y = \frac{4x-2}{3}\)

\(\large y = \frac{4(24)-2}{3}\)

\(=33\)

Answer 38

sorry, that should be 31, so she can send 31 messages

Answer 39

So with $24 she can send 33 text messages ?

Answer 40

*31

Answer 41

Oh okay :) So everything we just worked through is the answer basically ? Because it says to put in complete sentences

Answer 42

yes ! ima hav dinner... brb :)

Answer 43

Haha okay !