Someone please help. I have been stuck on this for awhile. Im not the smartest so please explain how to do it too.

84

Step-by-step explanation:

The surface of this figure consist of six faces:

two right triangles with legs = 4 and 3 sm;

one rectangle with sides 5 and 6 sm;

one rectangle with sides 3 and 6 sm;

one rectangle with sides 4 and 6 sm.

The surface area of whole figure is the sum of areas of this faces.

-- triangle area

-- rectangle 5x6 area

-- rect. 3x6 area

-- rect. 4x6 area

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x