Question

can someone pls help me with this question

Answer 1

f(x) = 28 + 5x

Answer 2

Since 28 is the value of 5 CDs, to get a total of 10 cds, the value of x must 5.

Answer 3

how do i find C(x)=

Answer 4

C(x) is the same as f(x)

Answer 5

C(x) <- Is called a function. Function can be named differently so long the format is similar to f(x).

Answer 6

so i multiply 28 and 10 by 5

Answer 7

nope, 28 is already 5 cds, since you you'd only need 5 more to make 10, x = 5

Answer 8

*you would

Answer 9

oh so for C(x)= i put 5

Answer 10

Nope, C(x) is the function. So C(x) = f(x) = 28 + 5x

Answer 11

-23 = 23x

Answer 12

-1

Answer 13

May I ask how you got 23x?

Answer 14

or -1.

Answer 15

5=28+23x
5=28+23x
+28 +28
-23 = 23 x
-1

Answer 16

5 CDs = $28 + $23 multiplied by the number of additional CDs?

Answer 17

5=28+23x
5=28+23x
-28 -28
-23 = 23 x
-1

Answer 18

sorry wrong sign

Answer 19

You presented the equations wrong. 10 CDs should be on left of your equation.
10 CDs = $28 + $5x
Since $28 = 5 CDS, x = number of additional CDS.

Answer 20

Got it?

Answer 21

think so

Answer 22

Recycled CDs Inc., offers a choice of 5 used CDs for $28 ($28 = 5 CDS), with each additional CD costing $5 (5x). Write a cost function for purchasing 5 or more CDS (C(x) = 28 + 5x). What will the cast of buying 10 CDs be? Let x represent the number of CDs over 5. (Since 28 is equal to 5 cds, then x = additional cds. The value of 10 cds is C(x) = 28 + 5x)

Answer 23

In Parenthesis are the translation from English to algebra.

Answer 24

with x = 5. Since 10-5 = x.

Answer 25

C(x)=3

Answer 26

28 + 5x?

Answer 27

28+5x(5)
28+25x
28+25x
-25 -25
x= 3

Answer 28

Substitute x for 5

Answer 29

C(x) = 28 + 5(x); x = 5
C(x) = 28 + 5(5)
C(x) = 28 + 25 = 53

Answer 30

What you did is linear equation, you're currently doing functions.

Answer 31

how do functions differ from linear equation

Answer 32

C(x) = has the same value of x

Answer 33

y = has the value solving the equation

Answer 34

C(x) = y

Answer 35

If you were using y then y = 28 + 5x

Answer 36

y = 10, x = 5.

Answer 37

so i put C(x)=5 then the total cost for the 10 cds is

Answer 38

10 = 28 + 5(5)

Answer 39

Typo

Answer 40

C(x) = cost
y = number of cds.

Answer 41

53 dollars

Answer 42

y = 5 + x => total number of cds.
C(x) = 28 + 5x => total cost of cds.

Answer 43

28 = 5 cds
x = number of additional cds
5x = total cost of the additional cds.

Answer 44

am i right C(x)=5 and !0 CDs cost $53

Answer 45

yes

Answer 46

Since you're looking for the cost (y), and cost is dependent to the number of cds (x). You graph would look like that.

Answer 47

thanks very much i dont have to graph this question

Answer 48

c(x) = 5(x-5) + 28

c(10) = 5(10-5) + 28
c(10) = 5(5) + 28
c(10) = 25 + 28
c(10) = 53

c(5) = 5(5-5) + 28
c(5) = 5(0) + 28
c(5) = 0 + 28
c(5) = 28

Answer 49

^okay, that's way better then mine.

Answer 50

thx a lot so this is what my answers should look like

Answer 51

C(x) = 5x +28

Answer 52

where x = # cds in addition to the first 5 cds

Answer 53

oh so it should look like this

Answer 54

nope

Answer 55

C(x) should look like 5(x-5) + 28

Answer 56

5x-25+28 right

Answer 57

nope.

Answer 58

That's what you should put in the box

Answer 59

The first box is asking for an expression. "5(x-5) + 28" this is an expression. You're not solving for x.

Answer 60

oooooh this

Answer 61

yes

Answer 62

you were saying it the whole time but i thought you mean it was an equation oooh im dumb af

Answer 63

thank you very much

Answer 64

"C(x) = 5(x-5) + 28" => Function (a type of equation)
"y = 5(x-5) + 28" => Equation (linear)

Answer 65

Anything with a "=" is an equation, anything with ">, <, etc" is an Inequality.

Answer 66

oook thanks a lot

Answer 67

anything without an "=" or ">, <, etc" is an expression.

Answer 68

now i understand

Answer 69

Your welcome :D

Answer 70

btw, you better close the ask :)

Answer 71

@ganeshie8 It says in the directions 'let x represent the number of cds over 5' , therefore I assumed x stands for the number of additional cds to the first 5,
so I got C(x) = 5x + 28
The other user sadworld has C(x) = 5(x-5) + 28
would you like to arbitrate here

Answer 72

also another user got 5(x-5) + 28

Answer 73

so what i put as final answer was wrong