In the equation f(x)=6x <--- that x is the independent variable.
Step-by-step explanation:
The independent variable changes freely
f(x) would be the dependent variable because it depends on the independent variable.
ex.
You're going to the movies with your friends. Each tickets costs 6 dollars (from the 6 in the equation above). You are bringing 5 friends with you, that's what the independent variable is. Your total, or f(x), will be 35.
500=4πr^2. first divide 500 from four which will equal 125, then divide 125 with π and it will equal 39.788 . finally √39.788. the answer will be r=6.3 or 6
