Equivalent to 7x+6/2=7-(3x+9)

Rick is driving to his uncles house in greenville, which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6