How do I find the angle measure of this

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

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

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)