Erin works as a computer support person after school. She earns $15 per day plus $0.50 for each computer she fixes. Yesterday, Erin earned $16.50.

She Fixed 1 computer but fixed it for two days

Step-by-step explanation:

Step-by-step explanation:

y=0.5x+15

We are told she earned $16.50 so

0.5x+15=16.5, subtract 15 from each side

0.5x=1.5, divide each side by 0.5

x=3

So she fixed three computers.

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

related questions

it is b)

hope this : )

step-by-step explanation: