If it takes 12 gallons of gasoline for a car to travel 300 miles, what is the rate of gasoline used in miles per gallon of gas?

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

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68