Which label corresponds to the segment showing the balloon descending but not landing?

What is the value of the expression below? 148+(-6)| + |– 35= 7|

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie