Answer:
12.56x^2+452.16
Step-by-step explanation:
A=pie r^2
(4x-24)/2= 2x-12 which is your radius
(2x-12)^2=4x^2+144
Pie=3.14ish
3.14(4x^2+144)
12.56x^2+452.16
The number of shoppers is an illustration of an exponential function.
The expression for the number of shoppers is: 
The given parameters are:
<em />
<em> -- the number of shoppers on the first day of business</em>
<em />
<em> --- the rate</em>
<em />
Because, the number of shoppers <em>increases each day</em>, the number of shopper on a certain day is:

Substitute 15% for r

Express percentage as decimal


Substitute 150 for a


Hence, the expression for the number of shoppers is: 
Read more about exponential functions at:
brainly.com/question/11487261
Answer:
A) 200 is to 300 dollars
B)150 is to 350 dollars
C) 250 is to 250
Step-by-step explanation:
Part A) We want to divide $500 in the ratio 2:3 using the unitary method.
The total ratio is 2+3=5.
This means one unit is
=$100
Therefore $500 in the ratio 2:3 is 2*100=200 to 3*100=300
Part B) We want to divide $500 in the ratio 3:7 using the unitary method.
The total ratio is 3+7=10.
This means one unit is
=$50
Therefore $500 in the ratio 3:7 is 3*50=150 to 7*50=350
Part C) We want to divide $500 in the ratio 1:1 using the unitary method.
The total ratio is 1+1=2.
This means one unit is
=$250
Therefore $500 in the ratio 1:1 is 1*250=250 to 1*250=250