Answer: D
Step-by-step explanation: the answer is d because it can be simplified more
Simplify both sides then isolate the variable and it gives you y=3.6
She can make 12 scarves if the area of each scarf is 4 square feet.
Circumference + perimeter =38
x = circumference of circle
find r in terms of x
2

r=x
r=

Area=

r^2
so..
A=

(

)^2
=

(

)
=

(38-x) is perimeter
then

(

)^2

+ (

)^2
then you graph it and it equals
16.716 cm the circumference of the circle