I need help ASAP I can’t do math for nothing because of the lack of me paying attention to class

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?

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

Select all of the following expressions that are equal to 2.5.