PLEASE PLEASE ( Also pls don't answer unless you're actually going to help me, thank you!)

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

1/2(2*4)=6 $$- agahajakanajak

i those same problems in math and dont know how to do them