50% of 70 is x% more than 30% of 80. what is the value of x?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g