Math
look at this system of equations. how can the system be changed so that the two equations have equal x-coefficients?
3x + 2y = 12
6x + 3y = 21
a. divide both sides of the top equation by 2
b. multiply both sides of the top equation by 2
c. divide both sides of the top equation by 3
d. multiply both sides of the top equation by

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m