Use distributive property to solve the two step equations 1: 3(c+5)=12
2: 3(t÷4)=18
3: 5(4d+8)=40
4: 3(2x+7)=27

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

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)