Answer:
366cm²
Step-by-step explanation:
There isn't enough info to determine that, I believe. You would need an equation that would allow me to determine the minimum output for an A.
Answer:
(x) = 
Step-by-step explanation:
Let y = f(x) and rearrange making x the subject
y = 4x ( divide both sides by 4 )
x = 
Change y back into terms of x
(x) = 