Determine the center and radius of the following circle equation:
x2 + y2 + 4x + 20y + 68 = 0

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

What is the ratio fraction form of 25: 9