M + n + 1 x 2 x 3 = n + 123, What is m?

Which math sentence can be used to determine if the triangle is a right triangle?

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?

Find the values of the variables in the kite