Which of the following is the standard form of the equation of a circle?

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

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !

What is mean median mode and range?