The sum of three times a number and 4 is 26. find the number. let n=the number. i just need the equation

n- the number

The equation:

So, the equation according to what you said would be:

n * 3 (three times a number) + 4 (the sum of thee times a number and 4) = 26

n * 3 + 4 = 26

Il'll solve it for you though:

n * 3 + 4 = 26 → we solve for n * 3

3n + 4 = 26 → we take -4 to the right side of the equation

3n = 26 - 4 → we solve fro 26 - 4

3n = 22 → we take 3 to the right side of the equation

n = 22 / 3 → we solve for 22 / 3

n = 7,33... → final answer

Hope it helped,

BioTeacher101

(If you have any questions, feel free to ask them in the comments)

astronomers is your final answer! : )

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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