A student purchased 9 binders for $11.07 . Which equation can be used to find the cost of each binder, b, in dollars?

11.07/9 =b  You only specifically asked for the equation

Step-by-step explanation:

11.07/9 =b is the equation why? because you bought 9 binders for 11.07 dollars so if you divide the price by the number of items bought you get the answer

It's quite simple, let me help!

If 9 binders are 11,07 you have to find the cost of one binder, by doing that you would create an equation to make it where 9 is dividable by the total cost, so it would be

9X= $11.07

Now You isolate the variable to get X alone and X is going to be the cost of one binder in dollars

Divide both sides by 9 and you get X=$1.23

Want to check your answer?

If one binder is $1.23 you can multiply

$1.23* 9 (binders) = $11.07

Which is correct because 9 binders is 11.07 according to the student.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

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