If you sell 3 bags of candy, then 4 bags and finally 1 bag, how much is each bag if you collected $6.40?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Which of the following parabolas opens up?