Answer:
6
Step-by-step explanation:
add 11 to both sides, that cancels out so then your left with 7x=42, divide by 7 on both sides then you should get x=6
hey sorry I need a free point !
So now its

but you want it in y=mx+b so
add x to both sides so that you have y on its own
so now it's
336......?? find the area of cross section and than multiply with the lenght