In the formula i=p·r·t, what does p stand for? a. percent: the interest rate expressed as a percentage b. principal: the amount of money you initially invested c. period: how often the interest is calculated d. payout: how much money you end up with

B) Principal: the amount of money you initially invested

Step-by-step explanation:

The given formula  I=P·r·t  is of Interest

In this formula

I is simple interest

r is the interest rate

t is the amount of time

P is the principle amount invested on which interest is calculated

hence of the given options, option b is correct i.e.

Principal: the amount of money you initially invested !

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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