I think it would be A.
Maybe not because they are all negatives.
Okay so susie + her friend makes two people. if she’s spending $9.75 per person that 2•9.75 which is equivalent to $19.50 !
You could answer this by rearranging the equation to make r the subject:
539 = π ×
× h
÷ πh
539 ÷ (π × h) =
√
√(539/π × h) = r
I hope this helps!
Independent variable influences the dependent variable
in f(x), f(x) is dependent on the vale of x
x is independent variable