1. calculate the vertex of the quadratic function is standard form: y=−2x2+8x−3 a. (2, 5) b. (5, 2) c. (-2, -27) d. (2, 12) 2. calculate the vertex of the quadratic function in vertex form and state if it is a max or min value: y=−3(x−2)2+4 a. (-2, 4); maximum b. (-2, 4); minimum c. (2, 4); maximum d. (2, 4); minimum 3. a graph is shown. what is vertex of this function? is it a maximum or minimum value. a. (3, 1) - maximun b. (1, 3) - minimum c. (1, 3) - maximum d. (0, 2) - minimum

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

17.08

correct me if i am wrong.