Which graph represents the following system of inequalities? y>(1)/(2)x-1 y<=-x+1 y>-2x-1

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

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?

This question awards 100 ! i really don’t want to fail i will also mark you !