If 7 is added to twice a number and this sum is multiplied by 2, the result the same as if the number is multiplied by -8 and 2 is added to product, what is the number?

Tim knows the volume and base area of a wooden chest that is in the shape of a rectangular prism. if the volume is 524 cubic unit and the base area is 15 square unit, what is the height of the chest? 124 unit 1124 units 112 unit 1112 units