If the area of circle b is 1/5 the area circle a What is the area of circle b

Me find the missing dimension of a triangle height: 7 in., area: 21^2

What expression is equivalent to 1/2(2+3x-6)

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done