Solve using quadratic equation (a-2)2 =8

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?

What is the measure of the smallest angle in the diagram? 15 29 32 45

Me asap! what is the slope of this line? enter your answer in the box.