If you wash 4 cars you would get $20
A=pir^2
c=2pir
a=pir^2=16
pir^2=16
divide both sides by pi or about 3.141592
r^2=5.0929581789406507446042804279205
sqrt both sides
r=2.2567583341910251477923178062431
circumference=2pir
circumference=2pi(2.2567583341910251477923178062431)
c=4.5135166683820502955846356124862pi
about 4.5pi square cm
Answer:
<u><em>C, </em></u> Expression B and Expression D
Step-by-step explanation:
<h2><u><em>
Step 1 : Analyzing the question:</em></u></h2>
The regular price of an item at a store is p dollars. The items is
on sale for 10% off the regular price. Some of the expressions
below represent the sale price, in dollars, of the item.
It says " <em>item on sale for 10% off </em>". That means
or
.
<h2><u><em>
Step 2 : Looking at the next portion of the question:</em></u></h2>
Expression A: 0.1p
Expression B: 0.9p
Expression C: 1 - 0.1p
Expression D: p - 0.1p
Expression E: p - 0.0p
<u>Expression A</u> doesn't make any sense. It only shows the how
much you save
<h3>
<em><u>Expression B:</u></em> This is one of the answer. </h3><h3 /><h3>

</h3><h3 />
<u>Expression C: </u> You can't subtract
from 
<h3>
<em><u>Expression D: </u></em> D makes sense.

</h3><h3 />
<u>Expression E: </u> This is the same thing as 
<h2><u><em>
Step 3: The answers:</em></u></h2>
<u><em>The answer is C .</em></u>
Just flip it and you’d get answer