Question

I really need help!!!!!! I don't get it
2.Otto mixed spices to create his own Italian seasoning. He used 15% garlic powder. Which of the following shows the percent equation and solution for how many tablespoons of garlic powder he uses to create 30 tablespoons of the seasoning?

30 = 0.15 * a;a =200

a = 0.15 * 30;a = 4.5

a = 0.15 * 30;a = 200

30 = 0.15 * a; a = 4.5