Solve and round if neccesary -2x^2+18+7x

(08.01)consider the following pair of equations: x + y = −2 y = 2x + 10 if the two equations are graphed, at what point do the lines representing the two equations intersect? (−4, 2) (4, 2) (−2, 4) (2, 4)

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?