Is health insurance service a bank service?

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 center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!