It is given that x = -1 is a root of the equation kx^2 + (k^2 + 1)x + 3 = 0, where k is a constant.
find
a) the possible values of k
b) the other root of the equation

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

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

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?