Question 957443
The Function rule A= πr^2 is a model for the area A of a circle with a radius r. Which of the following represents this equation written in function notation?
A. A(π) = r^2 
B. A(r) = πr^2 
C. A(x) = πr^2 
D. A(y) = πr^2
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If the right side doesn't say pi*r^2, cross it off.
If the left side doesn't say A(r), cross it off.