6y -11 and 2y+3 the value of y that makes line a // line b

Solve the equation x/4 - 5= -8 -27 -12 -7 12

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Which compound inequality could be represented by the graph?